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单词 swallow hole
释义 Noun: swallow hole  swólow hówl
  1. A depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
    - sinkhole, sink

Derived forms: swallow holes

Type of: depression, natural depression

Encyclopedia: Swallow hole

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更新时间:2024/11/11 12:00:16