| 例句 |
During the interim period, air quality has deteriorated.在过渡期间，空气质量下降了。Pollution has degraded air quality.污染降低了空气质量。The air quality was so bad that the government issued a health warning.空气质量非常恶劣，政府都发布了健康警告。The district is calling for a voluntary ban on using wood-burning stoves, in order to improve air quality.为改善空气质量，该区呼吁大家主动停用烧木柴的炉子。The air quality has deteriorated these past few days.前几天空气质量已下降。Standards will relate to ambient air quality and vehicle emission levels.标准将涉及环境空气质量以及汽车排放水平。 |