蔣健棠英語實用句子(135):All our hard work was in vain 本文已影響 1.14W人 ing-bottom: 200%;">All our hard work was in vain.我們的努力都是白費的。in vain,徒勞的,白費的。He didn't die in vain.他沒有白白地死去。I tried to persuade him but in vain.我嘗試說服他,但沒有用。