Andy did all she could to help the poor people all her _______(一生)

问题描述:

Andy did all she could to help the poor people all her _______(一生)
life还是lifetime , 为什么?
life和lifetime的区别是什么? 帮帮忙.

life
习惯上只说 all one's life 一生;一辈子;终身;辈子
不要根据意思去想当然,这就是语言.