cutting edges

基本解釋

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.
細化剪刀是美發(fā)師的常用工具，它的刀刃是鋸齒狀的，所以可以將頭發(fā)剪出不同的長度從而使它們不會堆在一起。
These tools had been shaped to make sharp cutting edges, but in Dikika, the stones were most likely used as they were found.
這些工具被打磨出了鋒利的刃口，但是迪基卡的情況則有所不同，那些石頭很可能是他們一發(fā)現(xiàn)就拿起來用的，竝沒有經過精心打磨。
The latter simulates a milling cutter with an extremely large number of miniature cutting edges.
磨輪用非常大量的微型切削刃模倣銑刀進行切削。

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.
FORBES: Obama and Romney Need to Get Real On Jobs Policy