另一种氮污染的来源为矿物燃料，矿物燃料燃烧时，会产生氮氧化物。
Another source of nitrogen pollution comes from fossil fuels, which produce nitrogen oxides when they are burnt.
根据飞机大小的不同，单程航线燃烧的燃料产生8 - 50千克的氮氧化物，以及二氧化碳、一氧化碳和硫氧化物。
Depending on the size of the aircraft, the burning of fuel during a single flight produces between 8-50kg of nitrogen oxide as well as carbon dioxide, carbon monoxide and sulphur oxide.
对于矿物燃料燃烧时氮氧化物的清除，在科技上和成本上都是可行的。
Existing technology can remove nitrogen oxides when fossil fuels burn, at a cost.
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