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》

Toward evening I would return to a more formal section of the park, set out as a garden, just off the main road.

傍晚时分，我回到公园，这次到了一个更正式一些的部分。这部分就在主路旁边，被设计成一个花园。

youdao

Hamid Karzai was declared the winner on Monday, roughly 24 hours after his opponent, Abdullah Abdullah, pulled out of the run-off election set for November 7.

VOA: standard.2009.11.02

Police say Myers sauntered into a barbershop Wednesday, coolly asked if the man cutting hair remembered him and then opened fire with a shotgun, the first shots in a burst of violence that would leave four dead, two critically wounded and people in this small village aching to find out what set the gunman off.

WSJ: Cops kill suspect in deadly NY shooting rampage

Chanting monks led Buddhist prayers for the former king, before an artillery salute sounded out and fireworks were set off.

BBC: Cambodia cremates former King Sihanouk

Lord Sainsbury and a group of biotech experts recently set off for America to find out how Britain can keep its edge.

ECONOMIST: Biotechnology