They looked at chemicals known as polycyclic aromatic hydrocarbons, or PAHs, which are another by-product of combustion.

他们研究了被称为多环芳烃的化学物质，这是燃烧的另一种副产品。

They want to get rid of combustion engine cars by 2035. And a lot of countries are saying that's too soon.

他们想在2035年前淘汰内燃机汽车。很多国家都认为这还为时过早。

So that's our main mission here is who understand how the processes of combustion, heat transfer, and ignition all produce a spreading fire.

所以我们在这里的主要任务是了解燃烧、传热和点火的过程是如何产生蔓延的火的。

You don't want to inhale the byproducts of combustion, whether it's from a cigarette, a wildfire, a diesel truck or a coal-fired power plant.

你不想吸入燃烧的副产品，无论是来自香烟、野火、柴油卡车还是燃煤电厂。

The European Union has announced the Commission's plan to ban the sale of combustion engine vehicles by 2035 in a bid to reach zero carbon emissions.

欧盟宣布委员会计划在 2035 年前禁止销售内燃机汽车，以达到零碳排放的目的。

Europe has been a hub of combustion car engine production for decades, but the industry is shifting to electric vehicles and China is taking over.

几十年来，欧洲一直是内燃机汽车发动机生产中心，但该行业正在转向电动汽车， 而中国正在接管。

It was in such a capacity in 1780 that Lavoisier made some dismissive remarks about a new theory of combustion that had been submitted to the academy by a hopeful young scientist.

1870年，一位很有前途的年轻科学家向科学院提交一篇论文，阐述一种新的燃烧理论；就是在那个岗位上，拉瓦锡说了几句轻蔑的话。

The darker you roast, the more of these kind of browning reactions you have, right up until the point of combustion, which I don't recommend reaching, but it does produce an enormous amount of CO2.

烤得越深，这种褐色反应就越多，直到燃烧点为止，我不建议达到燃烧点，但它确实会产生大量的二氧化碳。