她摔倒时头撞到了墙上。

她摔倒时头撞到了墙上。

She knocked her head against the wall as she fell.

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She knocked her head against the wall as she fell.

knocked 是动词 knock 的过去式,knock 的意思是"敲击、碰撞",指物体之间突然而有力的接触。

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