Thee Ministry of Environmental Protection's newly published air quality standard includes monitoring of PM2.5 - a kind of air particle with a diameter of 2.5 microns or less.

环保局新近发布的空气质量标准包括了PM 2.5的监测测——PM 2.5是一种直径等于或小于2.5微米的空气颗粒。

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Air quality in the capital has deteriorated because of the heavy fog. Beijing's air was slightly polluted on Monday, according to the China National Environmental Monitoring Center.

由于浓雾的原因，首都的空气质量已经恶化。中国环境检测中心报告称，本周一，北京的空气质量呈轻度污染状态。

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The Ministry of Environmental Protection's newly published air quality standard includes monitoring of PM2.5 - a kind of air particle with a diameter of 2.5 microns or less.

环保局新近发布的空气质量标准包括了PM 2.5的监测——PM 2.5是一种直径等于或小于2.5微米的空气颗粒。

youdao

The first job is for the environmental assistant and the gas checker to walk through the tunnels monitoring ventilation and air quality.

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