[ míngsīkǔsuǒ ] cudgel one's brains for ...; beat one's brains out, (trying to do ...); be in a brown study; contemplate deeply; puzzle over; rack one's brains; suck one's brains; think long and hard
Example Sentences:
1.
His thin, ascetic face mirrors an intensity of thought . 他那苦行僧似的瘦脸反映出他正在冥思苦索。
