No. 7,154 in Chinese
空气质量
Air quality.
In a sentence
今天的空气质量很差，不适合进行户外运动。
Today's air quality is poor, not suitable for outdoor activities.
In this sentence, '空气质量' is used as a noun referring to the state of the atmosphere's cleanliness or pollution level.
空气质量的改善需要大家共同努力。
Improvement in air quality requires everyone's collective effort.
Here, '空气质量' serves as a subject to emphasize the importance of improving the cleanliness or conditions of the air.
我每天都会检查空气质量指数，以决定是否开窗通风。
I check the air quality index every day to decide whether to open the windows for ventilation.
In this example, '空气质量' indicates a measure that influences personal decisions, connecting to indices or assessments of air cleanliness.
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