air

air 空气

词类

名词 (Noun)

词意

空气

读音

• IPA: /er/

变形

不可数

例句

1. Air is a mixture of gases that makes up Earth's atmosphere.（空气是构成地球大气层的气体混合物。）
2. Air pollution from vehicle emissions and industrial activities affects human health.（来自车辆排放和工业活动造成的空气污染影响人类健康。）
3. The composition of air is approximately 78% nitrogen, 21% oxygen, and 1% other gases.（空气的成分大约为78%的氮气、21%的氧气和1%的其他气体。）
4. Air quality is measured by the concentration of pollutants such as particulate matter and ozone.（空气质量是通过颗粒物和臭氧等污染物的浓度来测量的。）