这件外套是用粗羊毛呢制成的,非常保暖。

This coat is made of thick wool, which keeps you very warm.

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This coat is made of thick wool, which keeps you very warm.

wool 是名词,指"羊毛",特指从羊身上剪下的天然纤维,常用于制作保暖的衣物和纺织品。

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