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foam

noun
🔊/fəʊm/
🔊/fəʊm/
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  1. (also foam rubber)
     [uncountable] a soft light rubber material, full of small holes, that is used for seats, mattresses, etc.泡沫橡胶；海绵橡胶
    • a foam mattress泡沫橡胶床垫
    • foam packaging泡沫橡胶包装材料
  2. [uncountable] a mass of very small air bubbles on the surface of a liquid泡沫
     synonym froth
    • a glass of beer with a good head of foam一杯表面有厚厚一层泡沫的啤酒
    • The breaking waves left the beach covered with foam.浪花四溅，海滩上满是泡沫。🔊🔊
  3. [uncountable, countable] a chemical substance that forms or produces a soft mass of very small bubbles, used for washing, shaving (= cutting hair from the skin), or putting out fires, for example泡沫剂（用于洗涤、剃须、灭火等）
    • a bottle of bath foam一瓶沐浴泡沫
    • The fire extinguisher directs foam onto the fire.灭火器将泡沫剂对准火喷射。
    see also shaving foam
    4. Word OriginOld English fām (noun), fǣman (verb), of West Germanic origin; related to Old High German feim (noun), feimen (verb).

foam

verb
🔊/fəʊm/
🔊/fəʊm/
 [intransitive]
Verb Forms
present simple I / you / we / they foam
🔊/fəʊm/
🔊/fəʊm/
he / she / it foams
🔊/fəʊmz/
🔊/fəʊmz/
past simple foamed
🔊/fəʊmd/
🔊/fəʊmd/
past participle foamed
🔊/fəʊmd/
🔊/fəʊmd/
-ing form foaming
🔊/ˈfəʊmɪŋ/
🔊/ˈfəʊmɪŋ/
Idioms
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  1. (of a liquid液体) to have or produce a mass of small bubbles有泡沫；起泡沫 synonym froth
    • She looked down at the foaming white water.她低头看着发泡的白水。
    • The toothpaste foamed in his mouth.牙膏在他的嘴里起泡沫。
    • tankards of foaming beer啤酒泡沫大啤酒杯
    Word OriginOld English fām (noun), fǣman (verb), of West Germanic origin; related to Old High German feim (noun), feimen (verb).
Idioms
foam at the mouth
  1. (especially of an animal尤指动物) to have a mass of small bubbles in and around its mouth, especially because it is sick or angry口吐白沫（尤指因发病或暴怒）
    • The dog started foaming at the mouth.那条狗开始口吐白沫。
  2. (informal) (of a person人) to be very angry大发雷霆Topics Feelingsc2