lifetime

一生；寿命；终生；使用期英释nnthe period of time during which someone is alive or something exists

一生的；终身的adjadj

1 of a lifetime,一生最…的；终身难遇的

2 once in a lifetime,一生一次

3 long lifetime,长寿命

4 lifetime achievement,终身成就

5 lifetime education,生涯教育

1 It’s the sort of opportunity you see only once in a lifetime..这种机会你一辈子也只能碰到一次。