这是一个非常直观的表达，指通过做一件事同时完成了两个目标。

• I can drop you off at work and go to the grocery store, killing two birds with one stone. ^{我可以顺路送你上班再去超市，真是一举两得。}
• By biking to work, he kills two birds with one stone: he saves money and gets exercise. ^{通过骑车上班，他一举两得：省了钱又锻炼了身体。}
• I’ll read my emails while I wait for the bus to kill two birds with one stone. ^{我会趁等车的时候看邮件，以便一举两得。}