The bear left the young man along and went away.

于是熊便离开了。

Sadly it's estimated that there are only around 25,000 polar bears left.

遗憾的是，据估计，现在只剩下大约两万五千只北极熊。

He says that there are only about 2,500 bears left, and is worried that they will soon become extinct.

他说现在只剩下2500只棕熊了，他担心这些棕熊迟早会灭绝。

When you reach the fork in the trail, bear left.

【bear】走到小路分岔的地方时左转。