趣英语 / caving是什么意思？

caving是什么意思？

n.
崩落开采法，垮落，放顶，窟窿

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    He had always wanted to go caving .他过去一直想探索洞穴。With the roof caving in, there were an increasing number of desertions.由于大势已去, 逃兵的人数日益增多.The positively charged AlCl _ 2 - MMH - bentonite mud system possesses more powerful ...

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    caving的音标：caving的英式发音音标为：['keɪvɪŋ]caving的美式发音音标为：[]...