do in
phrasal verbdo somebody/yourself in (informal)
- to kill somebody/yourself
杀死，干掉（某人）；自杀 - [usually passive] to make somebody very tired
使筋疲力尽；使疲乏至极 - Come and sit down—you look done in.
过来坐坐吧，你看样子累坏了。
- Come and sit down—you look done in.
do something in
- (informal) to injure a part of the body
伤害（身体某部位） - He did his back in lifting heavy furniture.
他抬重家具时扭伤了腰。
- He did his back in lifting heavy furniture.