sql刪除無人借閱的書_查找，下載，借閱，租賃和購買電子書的最佳網站

sql刪除無人借閱的書

So, you’ve got yourself an eBook reader, smartphone, tablet, or other portable device and you want to put some eBooks on it to take with you. There are many options for obtaining free eBooks as well as purchasing, borrowing, or even renting eBooks.

因此，您擁有了自己的電子書閱讀器，智能手機，平板電腦或其他便攜式設備，并且希望隨身攜帶一些電子書。有許多選項可用于獲取免費電子書，以及購買，借用甚至租借電子書。

We’ve listed some sites that allow you to download free eBooks directly or be notified when eBooks are available for free or for a discounted price on popular eBook sites. If you can’t find the eBooks you want on the free sites, there are several sites that allow you to purchase current, best-selling? eBooks singly or through a monthly service. There are even special sites for lending and borrowing Kindle and Nook books with other readers across the U.S. We’ve also listed a couple of sites dedicated to searching for PDF eBooks, documents, etc.

我們列出了一些網站，這些網站使您可以直接下載免費的電子書，或者在流行的電子書網站上免費或以折扣價獲得電子書時會收到通知。如果您在免費站點上找不到想要的電子書，則有幾個站點可讓您單獨或通過每月服務購買最新，最暢銷的電子書。甚至還有與美國其他讀者借閱和借閱Kindle和Nook圖書的特殊網站。我們還列出了一些專門用于搜索PDF電子書，文檔等的網站。

免費電子書 (Free eBooks)

We’ve previously shown you how to find thousands of free eBooks online using sites such as Project Gutenberg, ManyBooks.net, DailyLit, and FeedBooks. You can even find free eBooks on Amazon. We’ve listed additional sources for free eBooks here.

我們之前已經向您展示了如何使用Project Gutenberg，ManyBooks.net，DailyLit和FeedBooks等網站在線查找數千本免費電子書。您甚至可以在亞馬遜上找到免費的電子書。我們在此處列出了免費電子書的其他來源。

互聯網電子書和文本檔案 (Internet eBook and Texts Archive)

The Internet Archive Text Archive contains a wide range of free fiction, popular books, children’s books, historical texts and academic books.

Internet存檔文本存檔包含各種免費小說，流行書籍，兒童書籍，歷史文本和學術書籍。

Free-eBooks.net (Free-eBooks.net)

Free-eBooks.net?offers unlimited free access to eBooks in HTML format and access to five eBooks each month in PDF and/or TXT format. Download books from all-new, rising authors and independent writers. Many categories of fiction and non-fiction books are available. If you’re a writer, you can also submit an eBook.

Free-eBooks.net可以無限制地免費訪問HTML格式的電子書，并且每月可以以PDF和/或TXT格式訪問五本電子書。從新興的新興作者和獨立作家那里下載書籍。有許多類別的小說和非小說書籍。如果您是作家，還可以提交電子書。

VIP memberships are available that provide unlimited access to PDF and TXT formats, as well as the HTML format. As a VIP member, you can also download unlimited books in the MobiPocket and ePub formats, get first access to new books, priority customer service, and storage space for your favorite books. You can pay $7.95 monthly (renews automatically), pay $39.97 for a year, or currently (as of the writing of this article) buy three years for the price of 40% off two years, $49.97.

VIP會員資格可無限制地訪問PDF和TXT格式以及HTML格式。作為VIP會員，您還可以下載MobiPocket和ePub格式的無限圖書，獲得對新圖書的優先訪問權，優先的客戶服務以及您喜歡的圖書的存儲空間。您可以每月支付7.95美元(自動續訂)，一年支付39.97美元，或者當前(截至本文撰寫時)以兩年40％的價格(49.97美元)購買三年。

eReaderIQ.com (eReaderIQ.com)

eReaderIQ is a free service that provides price drop alerts for Amazon Kindle books and watches your favorite titles to let you know when they are available for Kindle. You can also view a regularly updated list of all non-public domain freebies on Amazon.com and sign up to be notified by email when a new free book is released.

eReaderIQ是一項免費服務，可為Amazon Kindle電子書提供降價提醒，并觀看您喜歡的書名，以使您知道它們何時可用于Kindle。您還可以在Amazon.com上查看所有非公共領域免費贈品的定期更新列表，并注冊以在發布新的免費贈品時收到電子郵件通知。

eReaderIQ also offers a superior search engine that allows you to search the Kindle Store by genre and keyword, and define the price range, reader age, language, and more.

eReaderIQ還提供了一個出色的搜索引擎，使您可以按類型和關鍵字搜索Kindle Store，并定義價格范圍，閱讀器年齡，語言等。

百零 (Hundred Zeros)

Hundred Zeros?is a collection of best-selling eBooks that are currently free on Amazon. You can download and read any of these books on your computer, mobile phone, tablet, Kindle or inside your favorite web browser. The list is updated every hour.

《一百零》是暢銷書的集合，目前在亞馬遜上免費。您可以在計算機，手機，平板電腦，Kindle或您喜歡的網絡瀏覽器中下載和閱讀其中的任何書籍。該列表每小時更新一次。

書庫 (BookBub)

BookBub?is a service that keeps you updated on great book deals. They notify you about free or deeply discounted books, sometimes discounted as much as 90% off the original price. Only high-quality content is listed, books that are best-sellers, from a top-tier publisher, or have received top reviews and ratings from critics and readers. You can specify which categories you want to get notified about so you won’t get emails about deals you don’t want.

BookBub是一項服務，可讓您隨時了解最新的圖書交易。他們會通知您有關免費或打折圖書的信息，有時會打折高達原價的90％。僅列出高質量的內容，來自頂級出版商的暢銷書或獲得評論家和讀者好評的圖書。您可以指定要通知的類別，這樣就不會收到有關不需要的交易的電子郵件。

NOTE: The deals you receive from BookBub are only available for a limited time, so be sure to act quickly.

注意：您從BookBub收到的交易僅在有限的時間內可用，因此請務必Swift采取行動。

免費票 (Free Par-TAY)

Free Par-TAY offers links to free, quality eBooks from many different genres. The free eBooks on their site can be downloaded on specific dates posted on the site. You can also sign up for their newsletter to be notified of which eBooks are going to be available for free. Signing up for the newsletter automatically enters you in a drawing to win $100 in Amazon Gift Cards and in a drawing for a new Kindle.

Free Par-TAY提供了許多不同類型的免費優質電子書的鏈接。可以在網站上發布的特定日期下載其網站上的免費電子書。您還可以注冊他們的新聞通訊，以通知哪些電子書將免費提供。訂閱時事通訊會自動在抽獎中輸入您贏得$ 100的Amazon禮品卡以及在抽獎中使用新的Kindle。

自由書 (Freebooksy)

Freebooksy posts a free eBook at least once a day. The eBooks cover multiple genres, so everyone can download something they like. The eBooks are free for at least the day they are posted, and sometimes for a few days beyond that. The dates the eBooks are available for free are posted.

Freebooksy每天至少發布一次免費電子書。電子書涵蓋多種類型，因此每個人都可以下載喜歡的東西。這些電子書至少在發布之日是免費的，有時甚至超過幾天。免費發布了電子書的日期。

非免費電子書 (Non-Free eBooks)

Getting free eBooks is great, but sometimes you can’t find the book you really want for free. There are many ways to purchase, or even rent, current, best-selling eBooks. We list some of the more popular sites for buying and renting eBooks here, some of which also offer monthly subscription services.

獲得免費的電子書很棒，但是有時候您找不到免費的書。有很多購買或租用最新最暢銷電子書的方式。我們在此處列出了一些比較流行的用于購買和租借電子書的網站，其中一些網站還提供按月訂閱服務。

亞馬遜Kindle商店 (Amazon Kindle Store)

The Amazon Kindle Store offers over one million eBooks, including new releases and New York Times bestsellers. You can read the first chapter of most books so you can decide if you want to buy the book. As mentioned earlier in this article, there are also many free eBooks available on Amazon, including popular classics.

亞馬遜Kindle商店提供超過一百萬本電子書，包括新版本和《紐約時報》的暢銷書。您可以閱讀大多數書籍的第一章，以便決定是否要購買該書。如本文前面所述，亞馬遜上還有許多免費的電子書，包括流行的經典書籍。

Of course, you can buy the Kindle devices on Amazon, but you don’t need a special Kindle device to read Kindle books. Free Kindle apps are available for every major smartphone, tablet, and computer. Once you buy a Kindle book, you can read it on any device that has the Kindle app installed. Using Amazon’s Whispersync technology, you can automatically save and synchronize your furthest page read, bookmarks, notes, and highlights in your Kindle books across all your devices. That means you can start reading a book on one device, and pick up where you left off on another device.

當然，您可以在亞馬遜上購買Kindle設備，但是您不需要特殊的Kindle設備即可閱讀Kindle書。每個主要的智能手機，平板電腦和計算機都可以使用免費的Kindle應用程序。購買Kindle書后，您可以在裝有Kindle應用的任何設備上閱讀。使用Amazon的Whispersync技術，您可以在所有設備上自動保存和同步Kindle書中最遠的頁面閱讀，書簽，便箋和重點。這意味著您可以在一個設備上開始閱讀書籍，然后在另一臺設備上繼續閱讀。

Some libraries offer a service that allows you to check out eBooks, and you can have them delivered wirelessly to your Kindle app.

一些圖書館提供一項服務，使您可以簽出電子書，也可以將它們以無線方式發送到Kindle應用程序。

Barnes＆Noble – Nook書店 (Barnes & Noble – The Nook Book Store)

The Nook Book Store?by Barnes & Noble offers something very similar to the Amazon Kindle Store. You can purchase eBooks for Nook devices and free Nook software for mobile systems and computers such as Android, iPhone, iPad, PC, and Mac. You can also sync books you are currently reading across devices, just like Kindle books.

Barnes＆Noble的Nook Book Store提供的內容與Amazon Kindle Store非常相似。您可以購買適用于Nook設備的電子書以及適用于移動系統和計算機(例如Android，iPhone，iPad，PC和Mac)的免費Nook軟件。您也可以像Kindle書一樣跨設備同步當前正在閱讀的書。

虛構的 (Fictionwise)

Fictionwise.com is committed to providing the Internet’s most comprehensive collection of fiction and nonfiction in many popular eBook formats. They offer award-winning and high quality eBooks by top authors in all the major genres and are working towards making Fictionwise the most technically advanced eBook website, including providing a sophisticated search and sorting options.

Fictionwise.com致力于以許多流行的eBook格式提供Internet上最全面的小說和非小說類收藏。他們提供所有主要流派的頂級作者屢獲殊榮的高質量電子書，并致力于使Fictionwise成為技術上最先進的電子書網站，包括提供復雜的搜索和排序選項。

eBooks.com (eBooks.com)

EBooks.com offers a large range of eBooks in every subject category in multiple formats for your Apple or Android device, Nook, Kobo, PC, Mac, etc., so there’s something available for everyone. The software required to read books from eBooks.com is free. You can search for eBooks by subject, title, or author, or use the full-text search to search by keyword.

EBooks.com為您的Apple或Android設備，Nook，Kobo，PC，Mac等提供了多種格式的每個主題類別的大量電子書，因此每個人都可以使用。從eBooks.com上閱讀圖書所需的軟件是免費的。您可以按主題，標題或作者搜索電子書，或使用全文本搜索按關鍵字搜索。

If you want to find out when new eBooks become available in your areas of interest, you can sign up to receive free email alerts.

如果您想了解感興趣的地區何時可以使用新的電子書，可以注冊接收免費的電子郵件警報。

eReader.com (eReader.com)

EReader.com offers eBooks that are carefully prepared to maximize the reading experience. They focus on delivering quality eBooks for a wide range of mobile devices. Their eReader software is free for all of their supported platforms and devices.

EReader.com提供了精心準備的電子書，以最大限度地提高閱讀體驗。他們致力于為各種移動設備提供高質量的電子書。他們的eReader軟件可免費用于所有受支持的平臺和設備。

Google Play圖書商店 (Google Play Book Store)

The Google Play Book Store offers millions of books to choose from in every imaginable category for reading on Android smartphones or tablets, iPhones, and iPads. You can also choose to download your purchased books as ePub or PDF files for use on other eReaders or for reading on your computer.

Google Play圖書商店提供了數以百萬計的各種類別的書籍，供您在Android智能手機或平板電腦，iPhone和iPad上閱讀。您也可以選擇將購買的書籍下載為ePub或PDF文件，以在其他電子閱讀器上使用或在計算機上閱讀。

Books purchased from Google Play are stored in the digital cloud, which means you can access them from any compatible device, whenever and wherever you want. You can start reading a book on one device, continue reading it on a different device, and maybe even finish it on a third device, as long as each device has an internet connection.

從Google Play購買的圖書存儲在數字云中，這意味著您可以隨時隨地從任何兼容的設備訪問它們。您可以在一個設備上開始閱讀一本書，在另一臺設備上繼續閱讀，甚至可以在第三臺設備上讀完，只要每臺設備都可以連接互聯網。

鮑威爾的書 (Powell’s Books)

Powell’s Books offers competitively priced Google eBooks, Adobe Digital Editions, and DRM-Free PDFs for reading on your iPhone, iPod Touch, iPad, Android phones and tablets, your computer, and a variety of other eReader devices.

鮑威爾的圖書提供價格具有競爭力的Google電子書，Adobe Digital Editions和無DRM的PDF，可在您的iPhone，iPod Touch，iPad，Android手機和平板電腦，計算機以及其他各種電子閱讀器設備上閱讀。

電子書借閱，借閱和租賃 (eBook Lending, Borrowing, and Renting)

There are online services available that make it easy to lend and borrow Kindle and Nook books. You can loan any Kindle book that has lending enabled (not all books are lendable) to one other user for 14 days. At the end of the loan period, the title is automatically transferred back to your Kindle. While the book is out on loan, you are not able to read the book. For more information on lending and borrowing Kindle books, see the Amazon page about lending Kindle books. You can also lend out your Nook books and borrow other users’ Nook books. For both services, any book you own can only be loaned once.

有可用的在線服務，使借閱和借閱Kindle和Nook圖書變得容易。您可以將任何已啟用借閱的Kindle圖書(并非所有圖書都可以借閱)借給其他用戶14天。在貸款期結束時，標題會自動轉移回您的Kindle。借書時，您將無法閱讀該書。有關借閱和借閱Kindle圖書的更多信息，請參閱有關借閱Kindle圖書的Amazon頁面。您也可以借出您的Nook圖書并借用其他用戶的Nook圖書。對于這兩種服務，您擁有的任何書籍只能借一次。

You may not find every book you want to read, but you can borrow a wide selection of books from these websites.

您可能找不到想要閱讀的每本書，但是您可以從這些網站上借閱大量書籍。

Kindle所有者的借閱圖書館 (Kindle Owners’ Lending Library)

The Kindle Owners’ Lending Library allows you to choose from over 145,000 titles to borrow for free as frequently as a book a month, if you own a Kindle device and you have an Amazon Prime membership. There are no due dates on borrowed books. Available titles include all seven Harry Potter books and over 100 current and former New York Times bestsellers.

如果您擁有Kindle設備并且擁有Amazon Prime會員資格，則Kindle所有者的借閱圖書館可讓您從超過145,000種圖書中進行選擇，每月最多可免費借閱一本書。借書沒有到期日。可用的書名包括所有七本《哈利·波特》書籍以及超過100本當前和以前的《紐約時報》暢銷書。

NOTE: This only works with the Kindle devices, not with the free Kindle apps on other devices.

注意：這僅適用于Kindle設備，不適用于其他設備上的免費Kindle應用程序。

Kindle教科書出租 (Kindle Textbook Rental)

Amazon also offers a Kindle Textbook Rental service that allows you to save up to 80% off the list price of the print textbook. You can choose any length of time to rent the book from 30 days up to 360 days. You only pay for the exact time you need the book. Extend your rental time or decide to convert the rental to a purchase. You don’t need a Kindle device to rent textbooks. You can rent and read the textbooks on a PC, Mac, Kindle, or a mobile device, such as a smartphone or tablet. If you make notes or add highlights in the textbook, they are accessible to you at anytime, even after the rental expires, at kindle.amazon.com.

亞馬遜還提供Kindle教科書租賃服務，可讓您節省多達80％的印刷教科書標價。您可以選擇30天到360天之間的任意時間租借這本書。您只需支付需要這本書的確切時間。延長租賃時間或決定將租賃轉換為購買。您不需要Kindle設備即可租用教科書。您可以在PC，Mac，Kindle或移動設備(例如智能手機或平板電腦)上租借和閱讀教科書。如果您在教科書中做筆記或添加要點，即使在租賃期滿后，您也可以隨時通過kindle.amazon.com訪問它們。

去圖書館(和其他借電子書的圖書館) (Library To Go (and other libraries lending eBooks))

Now you can check out library books as eBooks without ever setting foot in a library. The Library To Go website mentioned here is for libraries in the Northern California area. Go to the website for a library near you to find out if they offer eBook lending and how to borrow eBooks from them.

現在，您無需踏入圖書館，就可以將圖書館書籍作為電子書簽出。此處提到的Library To Go網站是針對北加利福尼亞地區的圖書館的。請訪問您附近的圖書館的網站，以了解他們是否提供電子書借閱以及如何向他們借閱電子書。

Library To Go uses the Adobe Digital Editions software for eBooks and OverDrive Media Console for audiobooks. You can borrow eBooks in Kindle format (for U.S. libraries), EPUB, and PDF. Kindle books can be delivered to both Kindle devices and Kindle reading apps on other devices. EPUB eBooks have “reflowable” text that fits any screen, so they are good on most mobile devices. PDF eBooks have fixed text, but you can zoom in on the text to create a large-print eBook.

Library To Go將Adobe Digital Editions軟件用于電子書，將OverDrive Media Console用于有聲書。您可以借用Kindle格式的電子書(適用于美國圖書館)，EPUB和PDF。 Kindle書籍可以同時發送到Kindle設備和其他設備上的Kindle閱讀應用程序。 EPUB電子書具有適合任何屏幕的“可重排”文本，因此在大多數移動設備上都很好用。 PDF電子書具有固定的文本，但是您可以放大文本以創建大字體電子書。

Library To Go allows you to check out up to three titles and your cart will hold up to 15 titles. This differs, depending on the library. For example, the Ventura County Library in California (powered by OverDrive Media Console) allows you to check out up to five titles and your cart will hold up to seven titles. The lending period can vary from title to title. Titles are generally removed from your cart after 30 minutes so that other users can have the chance to check them out.

Library To Go允許您簽出多達三個標題，并且您的購物車最多可以容納15個標題。這有所不同，具體取決于庫。例如，加利福尼亞州的文圖拉縣圖書館(由OverDrive Media Console支持)允許您簽出多達五個標題，而您的購物車最多可以容納七個標題。貸款期限可能因標題而異。通常，標題會在30分鐘后從您的購物車中刪除，以便其他用戶可以將其簽出。

On the Library To Go site, you can place up to four titles on hold at one time. They send you an email when a title becomes available. You have five days to check out your hold after we email you notification that it is available. On the Ventura County Library site, you can place up to five titles on hold at one time and you have four days to check out the books on hold once they become available.

在“要去圖書館”網站上，一次最多可以保留四個標題。當標題可用時，他們會向您發送電子郵件。在我們通過電子郵件向您發送通知后，您有五天的時間來查看您的保留狀態。在文圖拉縣圖書館網站上，您一次最多可以保留五個書名，并且一旦有可用書，您將有四天的時間來檢查保留的書。

NOTE: Use the OverDrive service to find a public library in your area that allows you to check out books on your eReader. This is a relatively new service, so not all libraries are connected, yet. Check both the OverDrive site and your local library’s website to see if eBook rentals are available at your library. Also, be sure to check out the eBook lending policies for your local library.

注意：使用OverDrive服務在您所在的地區找到一個公共圖書館，使您可以在eReader上檢出書籍。這是一項相對較新的服務，因此尚未連接所有庫。檢查OverDrive網站和您當地圖書館的網站，以查看圖書館是否提供電子書租借。另外，請務必查看您當地圖書館的電子書借閱政策。

開放圖書館 (Open Library)

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Once registered on the Open Library site, you can borrow up to five eBooks for two weeks each from the growing collection of mainly 20th century titles available now. Each title in the library can be borrowed by one user at one time and can be read in a web browser, or in Adobe Digital Editions, as a PDF or ePub.

開放圖書館是一個開放的，可編輯的圖書館目錄，它建立在有史以來出版的每一本書的網頁上。在開放圖書館網站上注冊后，您可以從不斷增加的20世紀主要書籍中借出最多五本電子書，每本兩周。庫中的每個標題可以一次由一個用戶借用，并且可以在Web瀏覽器或Adobe Digital Editions中以PDF或ePub的形式閱讀。

電子書歸檔 (eBookFling)

eBookFling makes it easy for readers across the U.S. to borrow and share their Kindle and Nook eBooks. Earn credits by lending your eBooks, and use those credits to borrow eBooks from other users. The eBooks are automatically returned in 14 days. If you don’t want to lend an eBook, you can pay to borrow one.

eBookFling使美國的讀者可以輕松地借閱和共享其Kindle和Nook電子書。通過借閱您的電子書賺取信用，并使用這些信用從其他用戶借閱電子書。電子書將在14天內自動退回。如果您不想借出電子書，則可以付費借用一本電子書。

機頭 (Lendle)

Lendle allows you to lend and borrow Kindle books easily for free. You can lend Kindle books to people you know through Amazon, but Lendle also allows you to lend and borrow Kindle books with any U.S. Amazon Kindle users. Earn Amazon gift cards when you lend your Kindle books. A Kindle device is not required; Lendle works with the free Kindle apps for the PC and Mac computers, as well as mobile devices such iPad, iPhone, Android, and other popular devices.

Lendle使您可以輕松免費地借閱和借閱Kindle書。您可以將Kindle書借給您通過Amazon認識的人，但是Lendle還允許您向任何美國Amazon Kindle用戶借閱和借閱Kindle書。借出Kindle圖書時可獲得Amazon禮品卡。不需要Kindle設備； Lendle可與PC和Mac計算機以及iPad，iPhone，Android和其他流行設備等移動設備上的免費Kindle應用程序配合使用。

Lendle pays all users a small credit for every book they loan through Lendle. The price we pay for each book varies based on the price, demand, and supply of that book. Once you’ve loaned out a book, Lendle waits the full 21 day loan period (seven days for the borrower to accept, and then 14 days for the loan) before crediting the lend. Once you reach $10 in credits, Lendle pays out a $10 Amazon gift card. The gift cards are paid in bulk, twice a month.

Lendle對于通過Lendle借出的每本圖書向所有用戶支付少量信用。我們為每本書支付的價格因該書的價格，需求和供應而異。借出一本書后，Lendle會等待整個21天的貸款期(借款人接受為7天，然后為貸款14天)，然后再貸記給貸方。一旦您獲得10美元的信用額度，Lendle就會支付10美元的亞馬遜禮品卡。禮品卡每月兩次批量支付。

BookLending.com (BookLending.com)

BookLending.com is a website that matches lenders and borrowers of Kindle eBooks.? To participate in lending and borrowing Kindle books, you must first register as a user on the site or connect using Facebook Connect. Registering on BookLending.com creates a profile, which you can access from the top, right corner of the screen. Your profile page allows you to review the status of your loan offers and requests, initiate loans, and delete loan offers and borrow requests.

BookLending.com是一個與Kindle電子書的貸方和借方匹配的網站。要參與借閱和借閱Kindle圖書，您必須首先在網站上注冊為用戶或使用Facebook Connect進行連接。在BookLending.com上注冊會創建一個配置文件，您可以從屏幕的右上角訪問該配置文件。您的個人資料頁面可讓您查看貸款要約和請求的狀態，發起貸款以及刪除貸款要約和借貸請求。

電子書搜索引擎 (eBook Search Engines)

The following web pages contain search engines specifically used to find free PDF eBooks, articles, documents, and almost any kind information stored in PDF format.

以下網頁包含專門用于查找免費的PDF電子書，文章，文檔以及幾乎所有以PDF格式存儲的信息的搜索引擎。

PDF格式 (PDFGeni)

PDFGeni is a dedicated search engine for finding PDF eBooks, manuals, catalogs, data sheets, forms, and documents you can download and save. You can also preview the PDF files you find. Either search from the website directly or install the provided plugin (see the link in the upper, right corner of the search page) to add PDFGeni to the Firefox search bar.

PDFGeni是專用的搜索引擎，用于查找可下載和保存的PDF電子書，手冊，目錄，數據表，表格和文檔。您也可以預覽找到的PDF文件。您可以直接從網站上搜索，也可以安裝提供的插件(請參見搜索頁面右上角的鏈接)，將PDFGeni添加到Firefox搜索欄中。

You do not need to sign up to use the PDFGeni search engine.

您無需注冊即可使用PDFGeni搜索引擎。

PDF搜索引擎 (PDF Search Engine)

PDF Search Engine is another easy-to-use search tool for finding PDF eBooks and other PDF files. Sometimes the results give a direct PDF link. But, in other cases, you might need to download a torrent using a torrent client.

PDF Search Engine是另一個易于使用的搜索工具，用于查找PDF電子書和其他PDF文件。有時結果會提供直接的PDF鏈接。但是，在其他情況下，您可能需要使用torrent客戶端下載torrent。

免費電子書的RSS / Twitter提要 (RSS/Twitter Feeds for Free eBooks)

If you use an RSS reader to stay up-to-date on your favorite websites, you can also keep current on the availability of free eBooks with the following RSS and Twitter feeds.

如果您使用RSS閱讀器來了解自己喜歡的網站的最新信息，則還可以通過以下RSS和Twitter提要來獲取免費電子書的最新信息。

NOTE: If you find other Twitter feeds about free eBooks that you want to view in your RSS reader, see our article about viewing Twitter feeds in your RSS reader.

注意：如果您要在RSS閱讀器中找到有關免費電子書的其他Twitter提要，請參閱有關在RSS閱讀器中查看Twitter提要的文章。