Studying instead of watching TV will help you to get better exam results, while saving five yuan instead of buying an ice cream means you can buy a new book.

学习而不是看电视将帮助你获得更好的考试成绩，而节省五元钱而非买一个冰激凌意味着你可以买一本新书。

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It is necessary for you to buy a new book.

你有必要去买一本新的书。

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Buy a new book or start working through an online tutorial.

买一本新书或者阅读在线的教程。

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In a nutshell, renting a textbook will cost about half of what it would cost to buy a new book.

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So buy in London, sell in New York and book a 5 cent profit say.

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"When people buy a book from Amazon, they are really giving this whole new world of Internet commerce a try, " says Oppenheimer's Blodget.

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