- 空气是由许多种气体组成的混合物。
Air is a mixture of various gases.
- 动物离不开空气和水。
Animals cannot exist without air and water.
- 这些年空气质量恶化了。
Air quality has deteriorated these past few years.
- 这座村没有空气污染。
This village is free from air pollution.
- 宇宙里是没有空气的。
There is no air in space.
- 冷空气疾风席卷整栋房子。
A blast of cold air swept through the house.
- 没有空气，人无法存在。
Men can not exist without air.
- 空气污染将会威胁我们的生存。
Air pollution will be a threat to our survival.
- 空气对人来说就是水对鱼的意义。
Air is to us what water is to fish.
- 空气中的微粒可以引发癌症。
Tiny particles in the air can cause cancer.
