This time,it happened while he was working on a railroad with men who did rough work and looked rough.

VOA: special.2010.08.01

He's narrating in great detail what happened while he was in the womb. Where does this knowledge come from?

他花了很大笔墨很详细地描写了,他还在子宫里发生的事，但他是怎么知道的呢？

耶鲁公开课 - 1945年后的美国小说课程节选

"We watched for a couple of contractions while this happened and I said to Dave, 'We need to get somebody in now because she isn't happy in there', " she explained.

BBC: Imogen Skelcher

This happened while we were getting through the metal fence on to the street walk.

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All this happened while nuclear and fossil power stations have not been able to provide electricity any more.

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