Exhaust gases escape through ports in the cylinder walls.

而废气通过汽缸壁的接口排出。

Exhaust gases from automobiles are a major cause of air pollution and global warming.

汽车尾气是造成大气污染和全球变暖的主要原因。

There is no exhaust gas. The only byproducts are electricity heat and water.

没有废气。唯一的副产品是电、热和水。

When the diesel is really running cleanly, it's not as efficient because there's a lot of recirculation of the exhaust gases and a lot going on.

使用清洁柴油以后不像以前那样高效了，因为要进行废气再循环和其他过程。

Trees can also reduce the amount of exhaust gases and particles in the air, with some studies claiming that they help reduce local concentrations of nitrogen oxide by up to 57%.

树木还可以减少废气和空气中颗粒的数量，一些研究声称，它们有助于将当地的氮氧化物浓度降低高达 57%。

It's packed with miniature sensors that monitor the most important pollutants in the air around you, like nitrogen oxides, the exhaust gas from cars, or particulate matter that gets into your bloodstream and creates strokes and heart issues.

它装有微型传感器，可监测您周围空气中最重要的污染物，例如氮氧化物、汽车尾气或进入您血液并导致中风和心脏问题的颗粒物。