The problem is currently taxing the brains of the nation's experts (= making them think very hard) .
目前这个问题使得全国的专家大伤脑筋。
《牛津高阶英汉双解词典》
Under those unwritten laws, people were naturally reluctant to use their brains.
在这种不成文法底下, 人们就不愿意去动脑筋了.
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And still there was a large portion of the four hundred and twenty dollars unspent.
那四百二十元还剩下很多,这叫他伤了好一会儿脑筋.
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He can put things right if he will only use his head and be unselfish.
只要他动动脑筋,不要有私心,他会把事情办好的.
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