| Gb | Eng |
|---|---|
| 给我拔牙时用了一氧化二氮。 | I was given gas when they pulled my tooth out. |
| 大气中如果没有氧和氮，人就无法生存于地球了。 | If it were not for oxygen and nitrogen in the air, no man could live on the earth. |
| 空气主要由氮气组成. | Air consists chiefly of nitrogen. |
| 地球上空气的大部分成分是氮气。 | Nitrogen forms most of the Earth's air. |