swallow hole是什么意思 swallow hole怎么读
swallow hole的英文翻译是什么意思，词典释义与在线翻译
Noun:- a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
swallow hole的相关资料
sinkholen.阴沟的入口处；排水口；污水坑sinkv.下沉；沉没；渗透；低落；变低；衰弱；（太阳）落下n.水槽；沟渠；散热器；接收端
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