kill two birds with one stone 一举两得；一石二鸟；一箭双雕

【例句】
I killed two birds with one stone and picked the kids up on the way to the supermarket.
我在去超市的途中顺便接了孩子，一举两得。

To speed my escape, we decided to kill two birds with one stone.
为了加速我的逃跑，我们决定采取一箭双雕的行动。