CFCs abbr. 氟氯化碳,氯氟烃(chlorofluorocarbon)
- A 1987 treaty that phased out the use of CFCs is believed to have worked to halt the thinning.
1987年一项条约规定逐步停止使用氯氟烃被认为是促使臭氧停止变薄的原因。 - There is still a black market in CFCs, and halon production has increased in countries such as Brazil, India and Mexico.
现在含氯氟烃还存在着黑市交易。 在巴西、印度和墨西哥等国家,卤烃的生产依旧有增无减。 - Although CFCs have been phased out, they accumulated and persist in the atmosphere and the effect of the curbs takes years to filter through.
虽然氯氟烃已经被禁止使用,但它们对大气层长期积累和持续的制约和影响,需要好些年才会逐步显现出来。