名词
中文翻译：隧道入口
同义词：
['tunnel opening', 'tunnel portal']
例句：
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1.The tunnel entrance is just a few meters away from the main road.
隧道入口就在主路旁边几米处。
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2.The tunnel entrance was blocked by a large rock.
隧道入口被一块大石头堵住了。
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3.The tunnel entrance is designed to allow easy access for emergency vehicles.
隧道入口设计得便于紧急车辆快速进入。