名词
中文翻译：毛皮
同义词：
['fur', 'skin', 'pelt']
例句：
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1. The dog has a thick ruff around its neck.
这只狗脖子上有一层厚厚的毛。
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2. The fox was caught in the net with its ruff caught in the wires.
狐狸被网住了，它的毛皮也被网线缠住了。
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3. The ruff on the bear's neck is very soft and warm.
熊脖子上的毛皮非常柔软且温暖。