有趣的常识：北极熊的学名叫“海洋熊”，因为它是唯一身体能适应水中生活的熊类。
The polar bear's scientific name means "sea bear" because it's the only bear that has a body made for living in water.
北极熊主要生活在北极圈内，它们是已知的最大陆地食肉动物，而且还是最大的一种熊类。
The polar bear, which is native largely to the Arctic circle, is the world's largest carnivore species found on land. It is also the largest species of bear.
美国所捕捞的海产品中，几乎一半都是来自于白令海，这里同时也是海狮、海象、北极熊、濒危鲸类以及30多种海鸟的家园。
The Bering sea provides almost half the seafood caught in the U.S. and is also home to sea lions, walruses, polar bears, endangered whales, and more than 30 species of seabird.
应用推荐