晓萱在学校发脾气，把钢琴盖关上，夹伤友慧的手指。
Xiaoxuan throws a tantrum at school and causes Youhui's fingers to be hurt.
两个齿轮啮合的点，可以夹伤或压伤手指或其它身体部位。
The point where two gears mesh, which can pinch or crush fingers or other body parts.
两个齿轮啮合的点，可以夹伤或压伤手指或其它身体部位。
The point where two gears mesh, which can pinch or crush fingers or other body parts.
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