derail
/dɪˈreɪl/verb
with obj.(一般作be derailed)
1- cause (a train or tram) to leave its tracks accidentally使（火车, 有轨电车）出轨：
a train was derailed after it collided with a herd of cattle.
一列火车在与牛群相撞后出轨。
1.1
- no obj.(of a train or tram) accidentally leave the tracks（火车, 有轨电车）出轨：
the trams had a tendency to derail on sharp corners.
有轨电车在急转弯处容易出轨。
1.2
- with obj. figurative obstruct (a process) by diverting it from its intended course〈喻〉使脱离原进程; 阻碍, 阻挠：
the plot is seen by some as an attempt to derail the negotiations.
有人认为这一阴谋的目的是阻挠谈判。
派生词
derailment
noun词源
mid 19th cent.: from French dérailler, from dé- (expressing removal) + rail 'rail'.