They often fold over or bunch up, turning them into booby traps for anyone shuffling down the hall.
它们经常折叠或堆成一堆，成了任何拖着脚走过大厅的人的陷阱。
If we tied up a bunch of them together, they might support a road.
如果我们把它们捆在一起，它们可能会支撑一条路。
Thinning scissors are used by hair dressers and have serrated cutting edges so that hair is cut at different lengths. This way it doesn't all "bunch up" together.
细化剪刀是美发师的常用工具，它的刀刃是锯齿状的，所以可以将头发剪出不同的长度从而使它们不会堆在一起。
应用推荐