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boulder clay    我要挑错精准翻译

参考词典中boulder clay的常规释义:

基本释义
  • 砾泥,冰砾泥,冰碛物,泥砾
英英解释
  •  1个名词解释

    1. unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
      [同] boulder clay, till
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