Bu nehir kirli değildir.
- This river is not polluted.
Büyük şehirlerde hava kirlidir.
- The air is polluted in the big cities.
Kanalizasyon çoğunlukla okyanusu kirletir.
- Sewage often pollutes the ocean.
Fabrikalardan gelen gazlar havayı kirletir.
- Exhaust from factories pollutes the air.
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.