名词
中文翻译：空气
同义词：
['air', 'atmosphere', 'ambience', 'atmosphere', 'airspace']
例句：
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1. The scientist studied the aerodynamics of the airplane.
这位科学家研究了飞机的气动学。
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2. The city is surrounded by a beautiful sea and mountains.
这座城市被美丽的海和山包围着。
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3. The air quality in this area has improved significantly since the implementation of the new environmental regulations.
自从实施新的环保法规以来，该地区的空气质量有了显著改善。