北极熊的用法和样例：
例句
-
我从未见过北极熊。
I have never seen an arctic bear. -
北极熊的栖息地是冰冷的北极海域。
The polar bear's habitat is the icy waters of the Arctic. -
尽管警戒很严，北极熊还是逃出了动物园。
In spite of vigilance a polar bear escape from the zoo. -
北极熊虽然会游泳，但也是陆栖动物。
Although they can swim, the polar bears are terrestrial animals.
