[mass noun]a mass of small bubbles formed on or in liquid, typically by agitation or fermentation 泡沫 a beer with a thick head of foam. 有厚厚一层泡沫的啤酒。 ■a similar mass formed from saliva or sweat 唾沫;大汗,汗沫 ■a liquid preparation containing many small bubbles 有许多小泡沫的液体制剂 shaving foam. 刮脸膏。 ■a lightweight form of rubber or plastic made by solidifying such a liquid 泡沫材料(橡胶、塑料等) [as modifier]foam rubber. 泡沫橡胶。 ■(the foam)(poetic/literary)the sea (诗/文)海 Venus rising from the foam. 从海上升起的维纳斯。
verb
[no obj.]form or produce a mass of small bubbles; froth 起泡沫;发泡 the sea foamed beneath them. 海浪在他们脚下泛起泡沫。 ■(figurative, informal)be very angry (喻, 非正式)大怒 staff are foaming at the mouth. 职员们气得破口大骂。