Koala: an arboreal Australian marsupial that has dense grayish fur, large ears, and sharp claws and feeds chiefly on the leaves of eucalyptus trees.
树袋熊，考拉：一种澳大利亚树栖有袋动物，长有浓密的灰毛、大耳朵和尖利的爪子，主要以桉树的树叶为食。
Any of several North American rabbits of the genus Sylvilagus, having grayish or brownish fur and a tail with a fluffy white underside.
棉尾兔产于北美的林兔属的兔子，有灰色或浅棕色毛，尾部下边有白色松软绒毛。
Its fur is grayish brown in the summer.
它的毛皮是灰棕色的夏天。
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