名词
中文翻译：Unknown
同义词：
['foam', 'froth', 'bubble']
例句：
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1. The foam on the surface of the milk was so thick that it looked like a layer of soft cotton wool.
牛奶表面的泡沫很厚，看起来像一层软棉絮。
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2. The bubbles in the drink were so big that they almost popped when I took a sip.
饮料里的气泡很大，我喝了一口就差点爆了。
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3. The bubbles in the water grew larger and larger until they burst, creating a lot of foam.
水里的气泡越来越大，直到它们爆炸，产生了很多泡沫。