心机 xīnjī scheming Definitions Defs Origin Strokes Stroke Words Sentences Sents 离心机 líxīnjī centrifuge 费尽心机 fèijìnxīnjī rack brains to exhaust one's mental faculties in plotting or trying to find a solution; to take great pains用尽心机 yòngjìnxīnjī scheme to tax one's ingenuity
