- 空运
- air transport
- 空运
- airlift
- 空腹
- with an empty stomach
- 空腹服药
- take the pills before the meals
- 空际
- in the sky
- 空气
- air
- 新鲜空气
- fresh air
- 空气污染
- air pollution
- 空气
- atmosphere
- 政治空气
- political atmosphere [or climate]
- 空袭
- air raid [or attack]
- 空袭警报
- air-raid alarm