評論
打印
Air pollution
空氣污染
A: I've heard of ground-level ozone but can you explain what it is exactly?
A:我聽說近地面臭氧，但是你能確切解釋一下是什么嗎？
B:Yes, it's one of the main air pollutants. Factories don't emit it directly into the air.
B:是，它一個主要的空氣污染物。工廠不把它直接排到大氣中。
It's actually formed when nitrogen oxides and VOC emissions come into contact with heat and sunlight.
它實際會形成一氧化氮，而且它在與光和熱的接觸下會釋放出VOC。
A: Sorry? What does VOC stand for?
A:對不起？VOC代表什么？
B: Oh, VOCs are 'volatile organic compounds'. That's a technical term for solvents or other chemicals found in things like paint.
B:哦,VOCs是揮發性有機混合物。這是溶劑方面的一個專業術語，其它的化工品像油漆等也有這種物質。
A: So, what damage does ozone do to the environment?
A:那么,臭氧對環境有什么破壞？
B: Well, it can cause smog, which can affect people's health - especially people with breathing difficulties.
B:哦，臭氧會引起濃霧,影響人們健康，特別是會讓人感到呼吸困難。
