He was about to shut the door when an idea came to him.

他正准备关门时，突然想起了一个主意。

《柯林斯英汉双解大词典》

A number of things happen when an oral tale gets written down.

当一个口头故事被写下来的时候，会发生很多事情。

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He said when an elephant has fleas, it is the fleas that do the jumping.

他说，当一头大象有了跳蚤，是跳蚤在跳。

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One belief is that it started when an English stableman committed suicide by hanging himself while standing on a pail,or bucket.

VOA: special.2011.06.05

It's called this just because it's an electron that results when an electron absorbs a photon's worth of energy, so thus it's a photoelectron.

之所以这样称呼是因为,当一个电子吸收,一个光子的能量的结果，因此它是一个光电子。

麻省理工公开课 - 化学原理课程节选

And then I want to work on an organic garden when I'm older though,

然后等我年纪大了，就去有机花园工作，

想要个农场 - SpeakingMax英语口语达人

When an opportunity is over, users can instantly give testimonials on the product or service offered.

ENGADGET: blogger-avatar

Such sentiments can often lead to employees actually leaving their organizations when an opportunity arises.

FORBES: Managers Take Note: Seeing Co-Workers Bullied Makes Everyone Want To Quit

When an old person wants to start a conversation with a passerby, most recognize the need.

WSJ: Moving to Israel: An American Couple's Experience