They set off, two men out in front as scouts, two behind in case of any attack from the rear.

他们出发了，两人在前作为侦察员，两人殿后以防后方攻击。

《柯林斯英汉双解大词典》

Xerox set about a process of reverse engineering. It pulled the machines apart and investigated the Japanese factories to find out how they could pull off such feats.

施乐公司展开了一项逆向工程。他们把日本的机器拆开，调查了日本的工厂来弄清楚他们怎么生产出了如此了不起的产品。

《柯林斯英汉双解大词典》

They set off again - and promptly ran out of fuel.

他们又出发了，可是突然汽油用完了。

youdao

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VOA: standard.2010.07.21

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