名词
中文翻译：崩塌的洞穴
同义词：
['collapsed cave', 'crumbling cave', 'collapsing cave']
例句：
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1.The falling cave was filled with water and mud.
崩塌的洞穴被水和泥填满。
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2.The cavern is a popular tourist destination.
这个洞穴是热门的旅游目的地。
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3.The falling cave was caused by the earthquake.
崩塌的洞穴是由地震引起的。