His death set in motion a train of events that led to the outbreak of war.

他的死引发了一系列的事件，从而导致了战争的爆发。

《牛津词典》

Don't open the door while the train is in motion.

列车运行时，请勿打开车门。

《新英汉大辞典》

IT WAS like watching a train crash in slow motion.

这就像观看火车相撞的慢镜头。

youdao

"Everything suggests it was a pure accident where several temporary and unfortunate circumstances caused the woman to set the train in motion when she was cleaning, " Paer Andersson said in a statement, according to AFP news agency.

BBC: Swedish cleaner not to blame for train crash

The rest of the world is looking on in horror as a slow motion economic train wreck unfurls.

FORBES: To Save The Euro Germany Must Print Money

Without realizing it, he says, humans set into motion a train of events we didn't realize we were in no position to control.

CNN: Gaia straits: Planetary doctor says condition terminal