关栈

例句：

1. 1. The door was closed by the lock.
   门被锁上了。
2. 2. The project has been halted due to unforeseen circumstances.
   由于不可预见的情况，该项目已经暂停。
3. 3. The car engine suddenly ceased to run.
   汽车发动机突然停止运转了。