not bat an eye/eyelidinformalSHOCK to not seem to be shocked, surprised, or embarrassed 眼睛/眼皮都不眨一下;泰然不动,面不改色 They started talking about sex, but she didn’t bat an eyelid. 他们说起了男女之间的事,可她若无其事,连眼睛都不眨一下。
not bat an eye/eyelid• He used to tell the worst lies without batting an eye.
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