大多数氯氟甲烷存留在平流层下部。
Most of the chlorofluoromethanes reside in the lower stratosphere.
科学家们认为人类造成臭氧层破坏的主要原因是一些化学物质,像氯氟碳,当它们到达平流层后会分解成氯和溴,然后和臭氧发生化学反应从而破坏臭氧层。
The problem with the ozone layer is that when certain chemicals, like chlorofluorocarbons, reach the stratosphere, they break down into chlorine and bromine, which react with the ozone and destroy it.
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