As a boy,Carl said he knew if it was time to go to school by the sound of a train.
VOA: special.2009.11.01
I'm going to give an example or example of that--of the train kind of going by you, and the sound heading off in the other direction.
我将会举个例子,比方说,那种火车经过你时,它的声音会从别的方向传来
It is night time. And the only sound that can be heard is the long, lonely whistle coming from the train's engine.
VOA: special.2010.06.13
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