名词
中文翻译：初级空气比率
同义词：
['初级空气比，初级空气质量比例句：1. The primary air ratio in this area is very low', 'which affects the local ecosystem.（该地区的初级空气比率非常低，这影响了当地的生态系统。）']
例句：
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1. The primary air ratio in this area is very low, which affects the local ecosystem.
该地区的初级空气比率非常低，这影响了当地的生态系统。
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2.The primary air ratio in the city has been declining due to industrial emissions.
由于工业排放，该市的初级空气比率一直在下降。
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3. The primary air ratio in the region is critical for maintaining a healthy environment.
该地区的初级空气比率对于维持一个健康的环境至关重要。