名词
中文翻译：Unknown
同义词：
['subterranean river', 'underground stream', 'subterranean stream']
例句：
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1. Theunderground river is a fascinating feature of the area's geology.
地下河是该地区地质学的一个引人入胜的特点。
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2.The underground river runs through the city, providing fresh water for the people.
地下河穿过城市，为人们提供淡水。
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3.The underground river was discovered during a recent archaeological dig.
最近一次考古挖掘中发现了一条地下河。