每日一句：I have racked my brain.( 5.18 )
I have racked my brain.
我已经绞尽了脑汁。
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词组rack one’s brain，英文的解释是to cause great mental suffering，to torture brain by means of the rack.，即，用尽心思去思考事情，太用心了，好象饱受精神上的折磨。用汉语中的“绞尽脑汁”来形容正好。
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