Take out a piece of paper - or create a fresh and clean document on your computer - and start thinking about how you will go about what you are about to do.

拿出一张纸，或者在电脑生新建一个新文档，开始考虑你将要做什么，又要怎么做。

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Any piece of fresh fruit is a wiser health choice than a fruit drink that comes in a paper or plastic container, and drinking plain tea or water is a much healthier way to quench one's thirst.

选择任何一片新鲜水果是比选择一瓶纸或塑料包装的水果饮料明智得多的。而且，喝普通的茶或者是水是止渴更为健康的方式。

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It tells how agents write their message using a Pentel Rollerball, then press it against a fresh piece of paper to transfer an invisible message.

BBC: Spy tactics revealed by book