foam

• 指液体表面形成的许多小气泡聚集而成的物质；也指一种轻质多孔材料，用于缓冲或隔热。

A noun referring to a mass of small bubbles formed on the surface of a liquid, or a lightweight, spongy material used for cushioning or insulation.

不可数

1. Bubbly substanceA2formal

   A mass of small bubbles formed on the surface of a liquid, often from agitation or chemical reaction.

   泡沫

   • The beer had a thick foam on top.
   • The waves left white foam on the shore.
   • Soap creates foam when mixed with water.

   同义词fizzfrothlatherspumesuds

2. Lightweight materialB1formal

   A lightweight, spongy material used for cushioning, insulation, or packaging.

   泡沫材料

   • The mattress is made of memory foam.
   • He used foam padding to protect the fragile items.
   • The seat cushions are filled with foam.

• 动词，用于描述液体形成或产生大量小气泡（泡沫）的过程，也可用于表达愤怒或沮丧（如“气得冒泡”）。

A verb used to describe the process of forming or producing a mass of small bubbles, often from a liquid, or to express anger or frustration (e.g., 'foam at the mouth').

1. Produce foamB1formal

   To form or produce a mass of small bubbles, often from a liquid.

   起泡沫

   • The soap foams when mixed with water.
   • The waves foamed as they crashed against the rocks.
   • The beer foamed over the top of the glass.

   同义词bubbleeffervescefizzfrothlathersparkle

2. Become frothyB2formal

   To become covered with or produce a frothy substance, often from the mouth due to illness or exertion.

   起泡沫

   • The dog was foaming at the mouth after running so hard.
   • He was foaming with rage during the argument.
   • The horse foamed at the mouth after the long race.

   同义词bubbleeffervescefizzfrothlatherspume