The problem is that these gases have a long life time in the atmosphere. They stay for decades. Some of them have even a life time more than 100 years, so then you have the cold temperatures. That can then trigger ozone division.
问题是,这些气体在大气中有很长时间的寿命。可以存留几十年。他们中的一些甚至可以拥有100多年的寿命。所以,遭遇寒冷的天气时会耗费大量的臭氧。
BBC News.
stricken adj. 患病的;受挫折的;受…侵袭的;遭殃的
The panic-stricken passengers tried to rush the life-boats.
惊慌的旅客争先恐后,想挤进救生艇。
consignment n. 运送;委托;托付物
Please fill in the luggage consignment notes and labels.
请填写行李托运单和货签。
propaganda n. 宣传;[宗]传道总会
Art is a vehicle for(of)propaganda.
艺术是宣传的一种手段。
ultra-violet n. 紫外线
Now, although we are unable to see ultra-violet light, bees can do so;
尽管我们看不到紫外线,但蜜蜂能看到。
occur to :想到;想起
Good ideas occur to him off and on.
他时不时就想出好主意。
wrap up :伪装;使全神贯注;穿暖和的衣服
Let's wrap up the discussion.
让我们结束这次讨论吧。