week3 翻譯作業 1.4.1.1

1.4.1.1
Pollution is any chemical or physical change in the environment that is harmful to humans or other living organisms. Pollutants can enter the environment naturally, such as from volcanic eruptions, or through human activities, such as burning coal and gasoline.

汙染是環境上對人類或其他生物有害的物理或化學變化。汙染物可能進入自然環境，例如從火山爆發，或者通過人類活動，例如灼燒的煤炭和汽油。