That's the case for some of the gases that contribute to climate change, such as methane and nitrous oxide.
对一些造成气候变化的气体，如甲烷和氧化亚氮(一氧化氮，笑气)，来说，情况确实如此。
2
Methane is the most important of these gases, followed by black carbon and nitrous oxide.
甲烷是这些气体的最重要部分，然后才是黑碳和一氧化氮。
3
Using new technology, clean coal plants sharply reduced the number of sooty particles spewed into the air, as well as gases like sulfur dioxide and nitrous oxide.