Word · Frequency #13423
CFC
氟氯碳化物;氯氟烃
chlorofluorocarbon
- 1.
n a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans
abbr. 中央发射控制(Central Fire Control);全套设备控制台(Complex Facility Console);统一运费分类表(Consolidated Freight Classification);认证理财顾问师(ertified Financial Consultant)
abbr. 中央发射控制(Central Fire Control);全套设备控制台(Complex Facility Console);统一运费分类表(Consolidated Freight Classification);认证理财顾问师(ertified Financial Consultant)
In use
Many old refrigerators used CFCs as a cooling agent, but now safer chemicals are used.
The ban on CFCs in spray cans helped protect the ozone layer.
Scientists developed a new refrigerant to replace CFCs in air conditioners.
CFCs + [be] + used as + [noun]
表示过去的用途时常用被动语态,as 后接用途名词。
CFCs were formerly used as refrigerants.
氯氟烃以前被用作制冷剂。
CFC + [noun]
CFC 可直接放在名词前作定语,常见搭配如 CFC emissions、CFC gases。
CFC emissions are now regulated.
氯氟烃排放现在受到管制。
CFCs + [transitive verb] + [object]
CFC 是可数名词,作主语时常以复数 CFCs 出现,谓语动词用复数。
CFCs damage the ozone layer.
氯氟烃会破坏臭氧层。
Common mistakes
Many countries have banned CFC.Many countries have banned CFCs.
CFC 是可数名词,表示多种氯氟烃化合物时要用复数 CFCs。汉语没有复数变化,学习者容易漏掉词尾 -s。
They called for a global ban of CFCs.They called for a global ban on CFCs.
名词 ban 后接介词 on 才能引出禁令对象,即 ban on sth;of 不用于此搭配。中文“对……的禁令”容易直译为 of,但英语固定用 on。
Connections
Collocations
- CFC emissions
- 氯氟烃排放
- International agreements have sharply reduced CFC emissions.国际协议大幅减少了氯氟烃排放。
- CFC propellants
- 氯氟烃推进剂
- CFC propellants were once common in aerosol sprays.氯氟烃推进剂曾广泛用于气雾喷剂。
- CFC refrigerants
- 氯氟烃制冷剂
- Older air conditioners used CFC refrigerants.老式空调使用氯氟烃制冷剂。
- ban on CFCs
- 对氯氟烃的禁令
- Many countries signed a treaty calling for a ban on CFCs.许多国家签署了要求禁止氯氟烃的条约。
- ozone-depleting CFCs
- 消耗臭氧层的氯氟烃
- Scientists linked ozone-depleting CFCs to the Antarctic ozone hole.科学家将消耗臭氧层的氯氟烃与南极臭氧洞联系起来。
Synonyms
Learner notes
Memory Tip
把 cfc 记成 chlorine(氯)+ fluorine(氟)+ carbon(碳)三种元素,空调制冷剂罐上常见这个缩写。
Context & Register
语域:formal 常见场景:环境科学文献、环保政策文件、工业化学报告 CFC 作为名词通常指氯氟烃(chlorofluorocarbon),多用于环境科学、化工和环保政策等正式书面语境;在口语中比较少见,通常直接说 CFC。
Grammar Note
缩写词,指“氯氟烃”;复数形式为 cfcs。
Pronunciation & Spelling
CFC 是首字母缩略词,读作 /ˌsiː ɛf ˈsiː/(“see-eff-see”)。以上词都以长元音 /iː/ 结尾,与最后一个字母 C 的读音 /siː/ 押韵。注意不要按拼写把它读成 /kʌf/ 或 /sɪk/。
Usage priority
Collins 词频等级为 1,建议结合例句记忆,而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.