凹窝

例句：

1. 1. The car's bumper is deeply indented in the road.
   汽车的保险杠深深地凹进了路面。
2. 2. The rock is concave on one side and flat on the other.
   这块岩石一面是凹进去的，另一面是平的。
3. 3. The pottery has a deep indentation where the handle used to be.
   这个陶器有一个深深的凹槽，原来的把手就在那里。