By the mid-1930s, most refrigerators and air conditioners used chlorofluorocarbons – sometimes known under the trademark Freon – which were non-flammable, and safer to use.
到了20世纪30年代中期，大多数冰箱和空调都使用了氟氯化碳，有时以氟利昂的商标命名，它们不易燃，使用起来更安全。
| 单词 | Freon |
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原声例句
Scishow 精选系列 By the mid-1930s, most refrigerators and air conditioners used chlorofluorocarbons – sometimes known under the trademark Freon – which were non-flammable, and safer to use. 到了20世纪30年代中期，大多数冰箱和空调都使用了氟氯化碳，有时以氟利昂的商标命名，它们不易燃，使用起来更安全。 CNN 10 学生英语 2017年10月合集 I was working on a new type of heat pump that would use water as a working fluid instead of Freon. JOHNSON：我正在研究一种新型热泵，它使用水而不是氟利昂作为工作流体。 |
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