他刚到车站，火车就开了。（比较：当火车开动时，他刚到车站。）
当火车头呼啸着往前开动的时候，你能有空计划自己的将来。
As the engine hurls you forward, tooting its horn (as ours did almost constantly), you're free to plan your future.
然后，当所有乘客安全上了车，军乐般的音乐奏起，站台上的卫兵向列车最后挥手致意，火车慢慢开动了。
And then, when all of us were safely on board, there was a blast of martial-style music as the guards on the platform gave a final cheer and a wave and the train slowly pulled away.
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？
Why does a person standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
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