心机 thinkingscheming minds ......枉费心机： overreach yourself；overreach themselves；overreach myself；overreach ourselves费尽心机： rack one's brains in scheming例句他枉费心机地写文章诋毁这场运动。He tried in vain to write down the movement.他费尽心机却连一个例子都想不出来。Racking his brains, he couldn't think of a single example.不相信自己的人，就算多努力也会白费心机。Do not believe in themselves, even more efforts will be wasted.别费尽心机去洞察女孩的心思，因为她们总在变。Don't bother to penetrate girls' minds as they are always changing.
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