1.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。
2.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。
3.Volunteer to get involved in a worthwhile cause.
自告奋勇地参加一项值得去做的事情。