Meanwhile, China is preparing to introduce a new set of emissions testing standards, with tougher limits on exhaust gases such as nitrogen oxides, which cause respiratory diseases.
与此同时，中国正准备推出一套新的排放测试标准，更严格地限制氮氧化物等尾气的排放——氮氧化物等尾气会引发呼吸系统的疾病。
Fuels such as ethanol, bio-diesel to replace or partially substitute for conventional gasoline or diesel, can significantly reduce harmful automobile exhaust emissions.
如用燃料乙醇、生物柴油来替代或部分替代常规汽油或柴油，可大幅度减少汽车有害尾气排放量。
Regulatory agencies in both the us and Europe are tightening controls on fugitive emissions, such as equipment leaks, as opposed to point-source emissions from reactor vents or boiler exhaust stacks.
美国和欧洲监管机构正在加紧对过度排放的控制，例如设施泄漏，监控反应堆通风口及锅炉点源排放的废气。
Regulatory agencies in both the us and Europe are tightening controls on fugitive emissions, such as equipment leaks, as opposed to point-source emissions from reactor vents or boiler exhaust stacks.
美国和欧洲监管机构正在加紧对过度排放的控制，例如设施泄漏，监控反应堆通风口及锅炉点源排放的废气。
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