Beavers are very fast swimmers and can stay underwater for up to fifteen minutes.

河狸是速度极快的游水好手，能在水下呆十五分钟之久。

Additionally, the bears have a two-to-four-inch layer of fat that helps keep them buoyant and warm as they swim.

此外，北极熊还有一层2到4英寸厚的脂肪，可帮助在游水时保持浮力和温暖。

This carving of the two swimming reindeer had no practical function, only form. Was it just 'art'?

这对游水的刻品其实也没有任何实际功能，具有一种式。难道它仅仅是“艺术”？

But with translucent fur, strong swimming capabilities, and considerable body size, polar bears have become well-adapted to life in the wintry north.

明的皮毛、出色的游水能力、巨大的体型，都让北极熊能够更适应极冷的北极圈地区。

He swam powerfully and was dragged ashore by Pete and Hans at the very point where swimming ceased to be possible and destruction began.

他竭尽全力地游着，快到游水不起作用，他要在河底葬身的时候，皮特和汉斯把他拖到了岸上。

So next today, we're joining one for a swim both an expert and a manta off the coast of the east African country of Mozambique.

因此接下来，我们将与一位专家在东非国家莫桑比克的海岸和蝠鲼一起游水。

It's a superbly observed piece - and it can only have been made by somebody who has spent a long time watching reindeer swimming across rivers.

这艺术确是精确入致观察的结晶。只有花费很长时间观察过游水过河的人，才能创造出这件艺术品。

I never had anything wrong with my heel except the time the sting ray stung it when I stepped on him when swimming and paralyzed the lower leg and made the unbearable pain.

我的脚后跟从没出过毛病，除了有一次在游水时踩着了一条海鳐鱼，被它扎了一下，小腿麻痹了，痛得真受不了。