名词短语
中文翻译：在岩石中的隧道
同义词：
['in tunnel', 'underground tunnel', 'subterraneantunnel']
例句：
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1. The tunnelis so narrow that it's hardto see through.
这个隧道太窄了，几乎看不清。
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2. The tunnel was built tohelp people escape during an earthquake.
这个隧道是为了在地震时帮助人们逃生而建造的。
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3. The tunnel runs under the cityand connects several important buildings.
这条隧道位于城市下，连接了几个重要的建筑。