The polar bear's white fur is a natural camouflage. 北极熊(PB)的白色毛皮是天然的保护色。
There's a butterfly, a polar bear and her cub, and much, much more. 有蝴蝶,北极熊(PB)和她的幼童,和不多,更多的工作。
Polar bear paws have thick fur and sharp claws. 北极熊(PB)的爪子有很厚的毛和锐利的钳。
If you want to say polar bear, you can just say it. 你要想说是北极熊(PB)你就直说好了。
Well-intentioned campaigning organisations have fed us with sentimental descriptions of the polar bear, giant panda and blue whale. 善意的竞选组织极富感情地对我们描述北极熊(PB)、大熊猫和蓝鲸。