心機(jī) thinkingscheming minds ......枉費(fèi)心機(jī)： overreach yourself；overreach themselves；overreach myself；overreach ourselves費(fèi)盡心機(jī)： rack one's brains in scheming例句他枉費(fèi)心機(jī)地寫文章詆毀這場(chǎng)運(yùn)動(dòng)。He tried in vain to write down the movement.他費(fèi)盡心機(jī)卻連一個(gè)例子都想不出來。Racking his brains, he couldn't think of a single example.不相信自己的人，就算多努力也會(huì)白費(fèi)心機(jī)。Do not believe in themselves, even more efforts will be wasted.別費(fèi)盡心機(jī)去洞察女孩的心思，因?yàn)樗齻兛傇谧?。Don't bother to penetrate girls' minds as they are always changing.