Margo incisalis

例句：

1. 1. The car's dashboard has a serrated edge that makes it easy to hold onto.
   汽车的仪表盘边缘有锯齿，这使得握持起来很方便。
2. 2. The knife blade is serrated, which helps it cut through tough materials.
   这把刀的刀刃是锯齿状的，这有助于它切穿坚韧的材料。
3. 3. The roof of the house has a serrated edge that can be used for various tasks.
   房子的屋顶边缘有锯齿，可以用来做各种事情。