航空运输的排放物问题不久之后将由边缘走向中心。
Air transport will soon be central, not marginal, to the emissions issue.
哪种肉类产生的排放物更少：牛肉，鸡肉，羊肉或猪肉？
Which meat leads to fewer emissions: beef, chicken, lamb or pork?
手机也会排放废气以及煤化物。
欧洲控制氮氧化物的排放以德国较为典型。
但在生产中要消耗大量能源，并排放大量污染物。
But it will consume a lot of energy and release pollutants in the production.
机动车排放颗粒物是重要的空气污染物。
Particles from vehicle emission are important air pollutants.
当前我国空气污染问题日益严峻，汽车排放有害污染物是污染的重要来源。
Now the pollution become more serious, the exhaust of the car is the main source.
排放气的粉尘及恶臭物均达到国家排放标准。
The dust and off flavour in exhaust is under the control of national standard.
有毒有害空气污染物的环境影响是国内外研究的热点，而机动车排放是其重要源之一。
Studying the environmental effects of toxic air pollutants is currently very important in the world.
有毒有害空气污染物的环境影响是国内外研究的热点，而机动车排放是其重要源之一。
Studying the environmental effects of toxic air pollutants is currently very important in the world.
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