Well , whoever did this used a serrated edge .

那人用的刀上满是锯齿。

A tapered , serrated tool used to shape or enlarge a hole .

手钻用来钻孔，或扩大孔的尖细带齿的工具。

First announced itself with a series of serrated bellows .

它们首先以一系列此起彼伏的尖啸宣告自己的到来。

Looks serrated . He just dropped ?

看上去锯齿状他就那样倒下了?

Sharpens all types of knives including serrated .

锐化包括锯齿刀的所有类型。