名词
中文翻译：牛奶的皮
同义词：
['milk skin', 'cream']
例句：
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1. The milk has turned into a thick cream.
牛奶已经变成了浓稠的奶油。
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2. The cream is used to make delicious desserts.
奶油用于制作美味的甜点。
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3. The farmer carefully separated the milk skin from the rest of the milk.
农民小心翼翼地将牛奶皮从牛奶中分离出来。