当他碰到烫手的杯子时，不由得皱了下眉头。
He ___winced when he touched the hot cup.
每当看到蜘蛛时，她都会不自觉地皱眉。
She ___winces every time she sees a spider.
他碰到烫手的杯子时不由得龇牙咧嘴。
He couldn't stop ___wincing when he touched the hot cup.
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