1、
Most species have paired fins and skin covered with either bony or tooth-like scales.
多数的鱼都有一对鳍和覆盖在皮肤上的鳞。
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2、
Fishes having paired fins resembling limbs and regarded as ancestral to amphibians.
有一对类似于脚的鳍且被视为是两栖动物祖先的鱼类。
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3、
