名词
中文翻译：隧道
同义词：
['ditch', 'trench', 'conduit例句：1. The tunnel is so narrow that only one person can pass through at a time.（这条隧道非常狭窄，只能一个人通过。）']
例句：
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1. The tunnel is so narrow that only one person can pass through at a time.
这条隧道非常狭窄，只能一个人通过。
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2.The tunnel was built to help the flood victims reach safety.
这条隧道是为了帮助洪水受害者到达安全地带而建造的。
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3.The tunnel is used for transportation and storage of goods.
这条隧道用于货物运输和储存货物。