Description
剪刀其实也是分为左右手使用的，我们目前最常使用的剪刀，就是右手剪刀，左手的剪刀很少见到。剪刀用力剪时，大拇指会向掌外推，其余四指会向掌内拉，将把手部分略微左右分开，结合普通剪刀的结构，会让两片剪刃咬合得更紧，中间几乎没有缝隙，从而顺利剪开。而用左手用普通剪刀时，同样的动作，却会将把手拉紧，从而让两片剪刃分开较大的缝隙，自然剪不动了。
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