重 点
Foam consists of a mass of small bubbles that are formed when air and a liquid are mixed together. 泡沫 (橡胶); 海绵
noun [物质名词] 泡沫，气泡；泡沫橡胶，海绵橡胶；泡沫剂，泡沫产品；唾液，汗沫
The water curved round the rocks in great bursts of foam. 水流卷绕着岩石产生大量的泡沫。
verb [vt. 及物动词] 起泡沫，有泡沫
All the sharp corners were padded with foam. 所有的棱角都垫上了泡沫塑料。
- foam 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 27 The 'Vasa'
肥皂(soap)变成了很多泡沫(foam)
- 网友用 “Foam” 造句精选
- The breaking waves left the beach covered with foam. 浪花四溅，海滩上满是泡沫。
- ...shaving foam. …剃须泡沫。
- ...modern three-piece suites filled with foam rubber. …塞满海绵的现代3件套。