名词中文翻译
中文翻译：Unknown
同义词：
['cave', 'cavern', 'crevice', 'tunnel']
例句：
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1.The explorers found a hidden cave inthe mountain.
探险者们在山中发现了一个隐藏的洞穴。
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2. The cavern was filledwith stalactites and stalagmites.
洞穴里充满了石笋和石柱。
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3. The tunnel was too narrow forme to walk through.
隧道太窄，我走不过去。