由汽车尾气排放造成的污染和全球变暖现在也是许多人关心的严重问题。
Pollution and global warming caused by vehicle emissions and exhaust are now also serious issues that many people are concerned with.
由于汽车尾气排放，周围地区煤炭的燃烧以及建筑灰尘所造成的污染物，今年早些时候北京一度几周都笼罩在严重的雾霾当中。
Beijing was shrouded in severe smog for weeks early this year, with pollutants from vehicle emissions, coal - burning in neighboring regions and construction dust.
随着汽车尾气排放污染的日益严重，各国制定的排放法规也越来越严格。
With the increasing serious pollution due to vehicle exhaust, the emission regulations become more and more strict world widely.
由于汽车尾气排放，周围地区煤炭的燃烧以及建筑灰尘所造成的污染物，今年早些时候北京一度几周都笼罩在严重的雾霾当中。
Beijing was shrouded in severe smog for weeks early this year, with pollutants from vehicle emissions, coal-burning in neighboring regions and construction dust.
由于汽车尾气排放，周围地区煤炭的燃烧以及建筑灰尘所造成的污染物，今年早些时候北京一度几周都笼罩在严重的雾霾当中。
Beijing was shrouded in severe smog for weeks early this year, with pollutants from vehicle emissions, coal-burning in neighboring regions and construction dust.
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