名词
中文翻译：主要入口门
同义词：
['main entrance', 'main door']
例句：
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1.The main entrance is always crowded with people coming in and out.
主入口总是人来人往，非常拥挤。
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2. The main door of the building is locked at night.
大楼的主入口晚上是锁着的。
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3.The main door to the house was broken when we arrived.
我们到达时，房子的主要入口被打破了。