worthwhile cause

有价值的事业：指值得投入时间、精力和金钱的有意义的事业或活动。
常用释义
有价值的事业：指值得投入时间、精力和金钱的有意义的事业或活动。

例句

Its lead singer is Australias federal environment minister, Peter Garrett, who says the band was eager to help such a worthwhile cause.

乐队主唱是澳大利亚联邦环境部长彼德。加勒特。他说，乐队非常乐意投身于这样一个很有意义的事业。

Indeed, Hemingway welcomed his discovery of a worthwhile cause because it could give significance to an other-wise meaningless death.

因为他可以给这项事业以重要的意义，否则就是毫无意义的死亡。

Volunteer to get involved in a worthwhile cause.

自告奋勇地参加一项值得去做的事情。