rewarding:(of an activity, etc. 活动等) worth doing; that makes you happy because you think it is useful or important 值得做的;有益的
a rewarding experience/job
有益的经历／工作
Teaching is not very financially rewarding(= is not very well paid).
教书不会有很高的报酬.
lifetime:the length of time that sb lives or that sth lasts 一生;终身;有生之年;(某物的)存在期,寿命,使用期限
His diary was not published during his lifetime.
他的日记在他生前未曾发表过.
a lifetime of experience
毕生的经验
in the lifetime of the present government
在本届政府的任期内
