He had gambled and roistered and drunk until he dropped in his tracks.

他赌博闹事又醉酒, 直到当场死去为止。

There will undoubtedly be trouble with the unions if the union leader is dismissed.

如果工领导人被解雇,工肯定闹事的。

They are rioting in the streets.

他上闹事。

They rioted in the streets.

他上闹事。