名词
中文翻译：Unknown
同义词：
['foam', 'froth', 'bubbles']
例句：
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1.The foam on the surface of the milk was so thick that it could not be stirred with a spoon.
牛奶表面的泡沫太厚了，用勺子都搅拌不动。
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2.The bubbles burst and the water flowed away.
气泡爆裂，水流走了。
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3.The bubbles in the drink were too big to swallow.
饮料里的气泡太大，吞不下去。