名词
中文翻译：泡沫
同义词：
['foam', 'froth', 'bubble']
例句：
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1. The milk had turned into a thick, frothy layer on top of the pancakes.
牛奶变成了厚厚的一层，覆盖在煎饼上。
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2. The foamy liquid was so viscous that it couldn't be poured out easily.
这种泡沫状液体黏稠到难以倾倒出来。
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3. The frothy coffee was cold and refreshing in the hot summer day.
这杯泡沫状的咖啡在炎热的夏天里喝起来既凉爽又提神。