Air Pollution... (緊......)

1) reduce electricites. For example, schools could try to use fans instead of air conditioner during summer.

2) decrease fuel efficiency. For instance, schools could encourage the students to take public transportation to school instead of driving to school

3) use renewable energy sources. illustrations are using solar energy instead of using batteries

1.窗戶常打開、

2.通風系統妥善維修

3.通風系統使用適當。