The hazard and polluted circumstance of SO2 and NOx are described;
2
由氮肥产生的含氮氧化物等温室气体进入大气后，其产生危害能力二氧化碳的三百多倍。
Nitrogen oxide released from nitrogen fertilisers accumulates in the atmosphere as a green house gas that is 300 times more damaging than carbon dioxide.
3
柴油机的尾气中颗粒物、氮氧化物和碳氢化合物含量的很高，对环境造成了严重危害。
Emissions of diesel engine cause serious harm to environment because of including a great deal of particulate, NOx and hydrocarbon.
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