Books add to the pleasures of life.

书籍增添生活的乐趣。

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The final books add up to twelve volumes, or about the size of an entire old-style encyclopedia.

最终的书达十二卷之多，几乎与一整套旧式百科全书等量齐观。

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While I tend to buy a lot of books, these three were given to me as gifts, which might add to the meaning I attach to them.

虽然我倾向于买很多书，但这三本书是作为礼物送给我的，这可能会增加我赋予它们的意义。

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Food,housing,books and supplies can add ten to twelve thousand dollars a year.

VOA: special.2010.04.08

All you need is to add a Books to Read page to any relevant intranet, sign up to be an Amazon Associate and add a message: "To buy any of these books, click here" -- where "here" is the link to Amazon.com.

CNN: When digital culture meets print culture

Steve Kessel, an Amazon senior vice president, says the company launched Digital Text along with its Kindle in 2007 to give writers and small publishers simple tools to add books to the Kindle store.

WSJ: Digital Self-Publishing Shakes Up Traditional Book Industry

The carriers still face staggering debt loads, and several airlines may have to add more debt to their books.

FORBES