Büyük şehirlerde hava kirlidir.
- The air is polluted in the big cities.
Bu nehir kirli değildir.
- This river is not polluted.
Kanalizasyon çoğunlukla okyanusu kirletir.
- Sewage often pollutes the ocean.
Petrol sızıntısı körfezi kirletti.
- The oil spill polluted the bay.
The factory polluted the river when it cleaned its tanks.
The lights from the stadium polluted the night sky, and we couldn't see the stars.