On-board sensors measure the percentage of pollutants contained in different fuel mixtures.

机上的感应器测量出各种燃料混合物的制造的污染物的成分。

Gasoline engines have spark plugs that help in the ignition of the air fuel mixture.

汽油发动机有火花塞，有助于点燃空气燃料混合物。

Diesel engines have glow plugs that heat up the air fuel mixture, and combustion is achieved by compression.

柴油发动机有加热空气燃料混合物的发光塞，燃烧是通过压缩来实现的。

Then as the piston rises, this air and fuel mixture is compressed.

然后，随着活塞上升，空气和燃料混合物被压缩。

So, let's put this change today in perspective. I think they wanted to take, what, three billion gallons of ethanol out of the fuel mixture? Is that a large amount?

那么，让我们从今天的角度来看待这一变化。我认为他们想从燃料混合物中提取 30 亿加仑乙醇？这是一个很大的数目吗？