Chlorofluorocarbons (CFCs) were once widely used as refrigerants and propellants in aerosol cans.
氯氟碳化合物（CFCs）曾被广泛用作制冷剂和气溶胶罐中的推进剂。
The production of
chlorofluorocarbons has been banned due to their harmful effects on the ozone layer.
由于对臭氧层的有害影响，氯氟碳化合物的生产已被禁止。
Scientists have linked the depletion of the ozone layer to the release of
chlorofluorocarbons into the atmosphere.
科学家已经将臭氧层的消耗与向大气中释放氯氟碳化合物联系起来。
Many air conditioning units manufactured before the 1990s used
chlorofluorocarbons as a coolant.
许多在1990年代以前制造的空调装置都使用了氯氟碳化合物作为冷却剂。
Aerosol sprays that contained
chlorofluorocarbons were commonly used for hair styling and cleaning purposes.
含有氯氟碳化合物的气雾剂喷雾曾被广泛用于发型设计和清洁目的。
The Montreal Protocol, signed in 1987, aimed to phase out the production of
chlorofluorocarbons worldwide.
签署的《蒙特利尔议定书》旨在逐步淘汰全球范围内的氯氟碳化合物生产。
Chlorofluorocarbons are known to be potent greenhouse gases, contributing to global warming.
氯氟碳化合物被认为是强大的温室气体，加剧了全球变暖。
Due to their stability and low reactivity,
chlorofluorocarbons were initially considered safe for use in various applications.
由于其稳定性和低反应性，氯氟碳化合物最初被认为适用于各种应用。
Studies have shown that the concentration of
chlorofluorocarbons in the atmosphere has decreased since the implementation of international regulations.
研究表明，自实施国际法规以来，大气中的氯氟碳化合物浓度已下降。
The replacement of
chlorofluorocarbons with more environmentally friendly alternatives is an ongoing effort in many industries.
在许多行业中，用更环保的替代品取代氯氟碳化合物是一项持续努力。
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