发布于:2025-07-06 05:34浏览量:160文/优校网
1.【地】灰岩坑;落水洞
2.阴沟口;污水池;吸尘孔
3.藏垢纳污之所
1.a natural depression in the land surface, especially in limestone, where a stream flows underground into a passage or cave
2.a sunken area where waste collects