名词
中文翻译：Unknown
同义词：
['opening', 'opening up', 'opening out']
例句：
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1. 出口；开口；打开2.
在建筑中
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3.
在军事上
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1. The engineer carefully opened the door to inspect the machine.
工程师小心翼翼地打开门来检查机器。
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2. The team worked together to open up new markets for their products.
团队共同努力开拓新产品的市场。
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3. The storm closed in, and we had to open up the windows to let some fresh air in.
暴风雨来临了，我们不得不打开窗户让一些新鲜空气进来。