求翻译：天然气（CH4）是一种低碳、低污染燃料，氢多碳少，这点已为官员、大众所认识。各地尤其是大城市都在积极用天然气来替代煤炭以减少污染物排放（SO2、NOx、汞、CO2、PM2.5-PM10）是什么意思？

Natural gas (ch4) is a low-carbon, clean fuels, hydrogen, carbon and less, this is for the officials, the public know. Especially around the major cities in the positive use of natural gas to replace coal to reduce emissions of pollutants (so2, nox, mercury, co2, pm2.5-pm10)

Natural Gas (CH 4) is a low-carbon, low-pollution fuel, hydrogen-carbon-less, this point has been recognized by officials, and the public. In particular, all over the city are in active use natural gas to replace coal to reduce emissions of pollutants (SO NOx , 2 , 2 , mercury, CO PM PM 2.5 - 10)

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Natural gas (CH4) is a low-carbon, low-pollution fuels, hydrogen less carbon, has been known for the officials, public. Especially around large cities are actively using natural gas instead of coal to reduce pollutant emissions (SO2, NOx, mercury, CO2, PM2.5-PM10)

The natural gas (CH4) is one kind of low-carbon, the low pollution fuel, the hydrogen multi-carbon are few, this spot for the official, the populace had known.Each place in particular big city all in positively substitutes the coal with the natural gas to reduce the pollutant emissions (SO2, NOx, me