名词
中文翻译：Unknown
同义词：
['tunnel', 'tunnelling', 'passage', 'shaft', 'conduit']
例句：
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1. The tunnel is wide enough for two cars to pass through at once.
这个隧道足够宽，可以同时让两辆车通过。
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2. The tunnel was built to help transport goods from one side of the city to the other.
这个隧道是为了帮助运输城市两边的货物而建造的。
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3. The tunnel is used as a means of transportation between the two cities.
这个隧道是连接两个城市的交通方式之一。