manhole with rotatable cover

例句：

1. 1. The manhole was covered with a layer of dirt.
   这个人孔被一层土覆盖着。
2. 2. The construction crew had to dig a new manhole to bypass the blockage.
   施工队不得不挖一个新的人孔来绕过堵塞。
3. 3.The manhole is used for emergency repairs during construction.
   这个人孔用于建设期间的紧急修理。