一举两得----kill two birds with one stone

例句：

A: He sold the discarded car.

他把那辆废弃的车子卖掉了。

B: It's clever of him. It really killed two birds with one stone.

他真聪明，那的确一举两得。

同义词：

catch two pigeons with noe bean

cut both ways

kill two flies with one slap

stop two gaps with one bush