Steven: I think the biggest environment problem in my country is air pollution.
Lucy: Yes, I agree. The air here is much more polluted than in my country.
Steven: That's because your country is more agricultural and has much less industry.
Lucy: Yeah, you are right.
Steven: We have reduced emission of air pollutants in recent years, but cars are still a major source of them. Factories have become cleaner as stricter environment pollution laws have been introduced.
Lucy: The problem is now on a truly global scale. I don't believe that any single country can do anything about it.
Steven: I think you're right. An international response to this problem is needed.

史蒂文：我覺得我們國家最大的環境問題是空氣污染。
露茜：我同意。這里的空氣污染比我們國家嚴重多了。
史蒂文：那是因為你們國家農業比重比較大，工業比重比較小。
露茜：你說的沒錯。
史蒂文：我們這些年也在減少有害氣體排放量，但是汽車廢氣排放依然是空氣污染的主要原因。隨著環境保護法的頒布，工業廢氣排放沒有以前嚴重了。
露茜：現在的問題是個全球性問題。我認為單憑一個國家的力量不能解決問題。
史蒂文：你說得對。環境問題需要世界各國負起責任來共同解決。