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。
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A team of physicists in the us has created an infrared laser beam at a point in mid air, by focusing a UV laser onto a tiny volume of oxygen molecules.