to kill two birds with one stone meaning in English

一箭双雕
一举两得
一石二鸟

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。
This is a perfect way to kill two birds with one stone . why don ' t we use it
译文：这是一个一箭双雕的完全办法，我们为什么不用呢？
My sister lives just outside london . when i visited my brother in london , i decided to kill two birds with one stone and go to see her as well
我姐姐住在伦敦效外。我去伦敦看望哥哥时，决定也去看望看望她，这样就一举两得了。