froth
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：
All the froth bubbles add up to an aggregate bubble, he told the Financial Times.
他对英国《金融时报》表示：所有浮沫堆积起来，成为一个总的泡沫。
Froth color and size measurement method for flotation based on computer vision
基于计算机视觉的浮选泡沫颜色及尺寸测量方法
Local equity and property markets are starting to froth.
当地的股票和房地产市场已经开始产生泡沫。
Worries about speculative froth are focused on high levels of margin debt in retail trading accounts.
对投机性泡沫的担忧主要集中在个人交易账户的保证金借款（margin debt）水平过高上。
Some beer has more froth than others.
有的啤酒沫儿比较多。
Add a little of the warmed milk and allow to froth a little.
加一点温牛奶，并让它起点儿沫。