foam
单词辨析：
通常指液体中的气泡，有时也指固体中的气泡。
You can see bubbles rise to the surface when water boils.
水烧开的时候，你会看到水面有气泡。
Examine the glass carefully for bubbles.
仔细检查一下玻璃，看有没有气泡。
主要指肥皂水等的泡沫。
I brought an expensive soap yesterday, but it raised no lather at all.
昨天我买了一块很贵的肥皂，没想到它根本不起泡沫。
He put some lather on his chin, and then began to shave.
他在下巴上抹了些肥皂泡沫，然后开始刮脸。
相关例句：
The effect of foam agent and wood flour content on the properties of the foamed composite materials was studied.
考察了发泡剂用量、木粉含量对发泡复合材料性能的影响。
A foam is a colloidal system in which gas bubbles are dispersed in a liquid or solid.
泡沫也是一种胶体体系，其中气泡分散在液体和固体里。
Cool brown foam sprayed my hands.
我那样做了，凉凉的棕色泡沫溅到了我的手上。
Problems in research and application process of coal mine foam dust control technique were analyzed.
分析了煤矿泡沫除尘技术研究及应用过程中存在的问题。
This is a foam product.
这是一种泡沫产品。
We had given him a large foam mattress to sleep on.
我们给了他一张大海绵床垫用来睡觉。