Jack knelt down and touched the brown fur.

杰克跪下来摸了摸棕色的皮毛。

She liked the brown, soft fur of beaver, too, and the shaggy wolfs fur.

她也喜欢海狸棕色柔软的皮毛，还有毛茸茸的狼皮毛。

When it is too dark to see the brown fur of the rabbits, you can see the white tufts on their tails as they run away to their burrows.

要是天太暗了, 看不见兔子的灰色毛皮, 也能看见兔子跑回洞去时, 尾巴上的一丛白毛。