名词
中文翻译：隧道
同义词：
['tunnels', 'tunnels', 'passages', 'shafts']
例句：
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1.The engineer designed a tunnel adit to connect two buildings.
工程师设计了一个隧道导洞来连接两座建筑。
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2. The workers were digging a tunnel adit when they heard the alarm.
工人们正在挖掘隧道导洞时听到了警报声。
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3. The tunnel adit was used as a temporary shelter during the construction of the new highway.
在新建高速公路的建设过程中，隧道导洞被用作临时避难所。