She thanked the firefighters who saved her life. [=rescued her]她感谢消防队员救了她的命。

a surgical procedure that has saved the lives of thousands of people拯救了成千上万人生命的外科手术

The use of seat belts can save lives.使用安全带可以保护生命。

If you donate blood, you might save a life.如果你献血，就可能救活一个生命。

Thanks for covering for me. You really saved my life.谢谢你临时顶替了我。你真救了我的命。