成锯齿形地

例句：

1. 1. The car's dashboard has a serrated edge that makes it easy to grip.
   汽车的仪表盘有一个锯齿边缘，这使得握持起来很容易。
2. 2. The knife blade is serrated, making it sharper and easier to use.
   这把刀的刀刃是锯齿状的，使得它更锋利且更容易使用。
3. 3. The rock face is covered in serrated teeth, ready to bite into the earth.
   岩石表面覆盖着锯齿状的牙齿，准备咬入大地。