lost cause片语KK [lɔst kɑz] /lɔst kɑz/发音片语1注定失败的事、无望的事After three failed votes, the proposal was clearly a lost cause.经过三次表决失败,这项提案显然已经没有希望了。2无可救药的人、没指望的人口语I've tried teaching him to cook, but he's a lost cause.我试过教他做菜,可是他根本没救了。用这个字练口说→