In fact, the United States Customs Service reports that CFC-12 is a contraband problem second only to illicit drugs.

事实上，美国海关报告说，CFC-12 是仅次于违禁药物的第二大违禁品。

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The fact that the leakage of refrigerant CFC-12 from automotive air-conditioning is causing environment pollution seriously draws close attention.

汽车空调制冷剂CFC—12泄漏造成环境污染的问题已经引起了高度重视。

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