cutting edges

基本解释

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。
These tools had been shaped to make sharp cutting edges, but in Dikika, the stones were most likely used as they were found.
这些工具被打磨出了锋利的刃口，但是迪基卡的情况则有所不同，那些石头很可能是他们一发现就拿起来用的，并没有经过精心打磨。
The latter simulates a milling cutter with an extremely large number of miniature cutting edges.
磨轮用非常大量的微型切削刃模仿铣刀进行切削。

And while the plan itself does contain some sensible policy reforms — cutting corporate tax rates and expanding domestic energy production, for example — it mostly just nibbles around the edges.
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