Most of these substances directly result from the industrial, urban and vehicular combustion of fossil fuels.

VOA: standard.2009.03.23

So, you might say, well, gee, why don't we just power our cars with hydrogen, use an internal combustion chamber.

你可能会说，好吧，哎呀，为什么我们不把氢气,放在汽车内部的燃烧室，来给我们的汽车提供动力呢。

麻省理工公开课 - 固态化学导论课程节选

Well, if you get the combustion chamber hot enough, in point of fact, there are some reactions between nitrogen and the oxygen.

如果燃烧室的温度足够高的话，实际上在氮气和氧气之间,会发生一些反应。

麻省理工公开课 - 固态化学导论课程节选

I want to see the end of the internal combustion engine applied to personal mobility.

我想见证内燃机不在应用于,人们出行生活。

麻省理工公开课 - 固态化学导论课程节选

But, in an internal combustion engine what happens is we don't have an oxygen tank.

但是在一个内燃机中,如果我们没有氧气罐会发生什么呢。

麻省理工公开课 - 固态化学导论课程节选

that nitrogen goes through the combustion chamber.

氮气会经过燃烧室。

麻省理工公开课 - 固态化学导论课程节选