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thermal

adjective
🔊/ˈθɜːml/
🔊/ˈθɜːrml/
 [only before noun]
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  1. (specialist) connected with heat热的；热量的
    • thermal energy热能
    Topics Physics and chemistryc1
  2. (of clothing衣服) designed to keep you warm by preventing heat from escaping from the body保暖的；防寒的
    • thermal underwear保暖内衣裤
    Topics Clothes and Fashionc2
  3. (of streams, lakes, etc.溪水、湖泊等) in which the water has been naturally heated by the earth温暖的；热的
    • thermal springs温泉
    4. Word Originmid 18th cent. (in the sense ‘relating to hot springs’): from French, from Greek thermē ‘heat’.

thermal

noun
🔊/ˈθɜːml/
🔊/ˈθɜːrml/
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  1. [countable] a rising current of warm air used, for example, by a glider to gain height 上升的热气流
  2. thermals
     [plural] (especially British English) warm underwear that prevents heat from escaping from the body保暖内衣裤Topics Clothes and Fashionc2
    3. Word Originmid 18th cent. (in the sense ‘relating to hot springs’): from French, from Greek thermē ‘heat’.