| 释义 | 
		sinkholes是sinkhole的复数 - n.【地】灰岩坑;落水洞;阴沟口;污水池
 - 网络灰岩洞;落水坑
 
 n.  | 7. 〔技〕收缩孔,污水井,阴沟口,渗(污水,灰岩)坑,落水洞,泥箱 7. 〔技〕收缩孔,污水井,阴沟口,渗(污水,灰岩)坑,落水洞,泥箱  |  
 n.  | 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  |  
  |