From sleep cycles to hibernation, light regulates most of life on Earth.

不论睡周，光调节着地球上大部分生命的活动规律。

Which of these animals hibernates in winter?

以下哪种动物在天会？

It's particularly found in animals that hibernate - the ones that sleep during the winter.

这种现象在的动物身上尤其常见，动物那些在天只睡觉的动物。

Aristotle's second and even more enduring hypothesis was that birds hibernate.

鸟类会。

Come with me! I'll show you why hibernation's so important.

跟我来吧！我要让你知为什么这么重要。

Male polar bears do not hibernate and remain active throughout the winter.

公北极熊不进行，而在整个季都保持活动。

They're furry, fat and hibernate all winter. Not bears - bumblebees.

它们毛茸茸、胖胖的，整个天都在。

Go into hibernation for a little bit. And just sleep it out.

进入。直接睡过去。

Some of the smaller species, like thescelosaurs and leptoceratops, could have burrowed underground and hibernated.

像奇异龙和纤角龙等小恐龙会挖个地。

During hibernation, they breathe through their skins, not their mouths.

间，它们通过皮肤而不嘴巴来呼吸。

Frogs, like many amphibians, also hibernate when it gets cold.

像许多两栖动物一样，当天气变冷时，青蛙也要。

If they are disturbed during hibernation, they can get up very quickly.

如果它们在时被吵醒，它们能很快地爬起来。

Harbiners, people from Harbin, do not hibernate during the winter.

哈尔滨人在天可不会。

Sculptures forced into hibernation in this renaissance palace.

在这座文艺复兴时的宫殿里，雕塑们也被迫进入。

Seeing it as getting my little burrow ready for a period of hibernation.

把它看作让我的小穴为做好准备。

Most of the animals here are either hibernating or have migrated south for the winter.

这里大部分的动物不在，就往南方迁移过了。

Unlike other bears, the panda can't fatten itself up and hibernate through the winter.

不像其他熊类，熊猫无法通过吃胖后来度过天。

Many insects, plants and even some animals are coming out of a deep, deep sleep.

许多昆虫、植物有动物也正从中苏醒过来。

What type of bears do not spend their winters hibernating?

什么种类的熊天不会呢?

Last year hibernating butterflies covered 35 percent more forest than the year before.

去年的蝴蝶覆盖的森林面积比前年增加了35%。