名词
中文翻译：水下隧道
同义词：
['submarine tunnel', 'undersea tunnel例句：1. The underwater tunnel connects the two cities.（这条水下隧道连接了两个城市。）']
例句：
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1. The underwater tunnel connects the two cities.
这条水下隧道连接了两个城市。
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2. The submarine tunnel is a marvel of modern engineering.
这条海底隧道是现代工程的奇迹。
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3.The underwater tunnel was completed in 2018 and has greatly improved transportation.
这条海底隧道于2018年完工，极大地改善了交通。