| Gb | Eng |
|---|---|
| 废气已过视为城市空气污染的原因。 | Exhaust gas has been incriminated in air pollution in cities. |
| 汽车放出的废气在污染我们城市的空气。 | Gases from cars are poisoning the air of our cities. |
| 加装了防护过滤器以后，这烟囟已不再散发成股的废气到大气中去了。 | The chimney is no longer giving off volumes of waste gas into the atmosphere, as protective filters are being used. |