Primary standard — an ambient air pollution standard designed to protect human health.

基本标准——一个旨在保护人类健康的周围空气污染级别。

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The connection mode of tea leaves, models and group scenery materials can reach the green and non-pollution standard.

茶叶和模型及组景材料的连接方式能达到绿 色无公害的标准。

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The EPA tagged the county at the end of 2006, after pollution from particulates - known to experts as "fugitive dust" - exceeded the emissions standard for two years running.

环保署选中2006年底选中该镇，当地两年来微粒污染(专家称之为“浮沉”)超过了排放标准。

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He took historic action -- his administration did -- to confront climate change, including proposing the first national standard for harmful carbon pollution for new power plants, as well as establishing unprecedented standards for cars and trucks that will slash emissions of carbon pollution while, at the same time, saving consumers billions of dollars.

WHITEHOUSE: Press Briefing

District Circuit Appeals Court-rejected Cross-State Air Pollution Rule and the Mercury Air Toxics Standard, are heavily premised upon condemnation of PM2.5 as a killer.

FORBES: EPA Charged With Lethal Experiments On Hundreds Of Unsuspecting Subjects

Moreover, it is economic growth that has provided the resources enabling us to dramatically reduce pollution and improve the environment, without trashing our standard of living.

FORBES: Economic Growth, Not Redistribution, Most Benefits The Poor, Working People, And The Middle Class