Brown bears are getting ready to hibernate.

棕熊要开始冬眠了。

Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.

和棕熊以及北极熊一样，懒熊可能生活在一个少树的环境中。

Why don't we get unicellular elephants, or blue whales, or brown bears?

为什么不存在单细胞的大象，或是蓝鲸，亦或是棕熊呢？

Two sophisticated brown bears riding on a bicycle and side car in 1928.

两只老练的棕熊骑在一辆自行车和侧三轮摩托车上，1928年。

On a trip to Alaska, I had the opportunity to photograph Alaskan brown bears.

在去阿拉斯加的旅途中，我曾有机会记录下阿拉斯加棕熊。

The largest bears living today are the Alaskan Brown Bears, the Kodiak Bears and the Polar Bears.And an Arctodus would be about twice as large as either one of those.

如今生活的最大的熊，是阿拉斯加棕熊、科迪亚克熊，以及北极熊。而熊齿兽的体型是它们任意一个的两倍多。

They also lost the grinding molars that brown bears use to chew up plant matter.

它们也失去了棕熊用来咀嚼植物性食物所用的臼齿。

For once, the voracious brown bears manage to think about something besides food.

贪吃的棕熊破天荒地将食物抛在脑后。

It is believed polar bears are descended from brown bears that became isolated by ice glaciers around the time the ice sheet began to form.

据说北极熊是由棕熊演变而来的，大概是冰原开始形成时期被冰川隔离的。

Grey wolves, brown bears and the massive European bison, which is bigger than the American bison, with tiny populations still surviving today in Eastern Europe.

灰狼、棕熊和巨大的欧洲野牛。欧洲野牛比美洲野牛还要庞大，现在只有极少数量生活在东欧地区。