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

不论是睡眠周期还是眠，光调节着地球上大部分生命的活动规律。

Which of these animals hibernates in winter?

以下哪种动物在会眠？

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

种现象在眠的动物身上尤其常见，眠动物是那些在只睡觉的动物。

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

鸟类会眠。

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

跟我来吧！我要让你知为什么眠么重要。

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

公北极熊不进行眠，而是在整个季保持活动。

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

它们毛茸茸、胖胖的，整个在眠。

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

进入眠。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洞眠。

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

眠期间，它们通过皮肤而不是嘴巴来呼吸。

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

像许多两栖动物一样，当气变冷时，青蛙也要眠。

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

如果它们在眠时被吵醒，它们能很快地爬起来。

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

哈尔滨人在可不会眠。

Sculptures forced into hibernation in this renaissance palace.

在座文艺复兴时期的宫殿里，雕塑们也被迫进入眠。

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

把它看作是让我的小洞穴为眠做好准备。

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

里大部分的动物不是在眠，就是往南方迁移过了。

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眠来度过。

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

许多昆虫、植物还有动物也正从眠中苏醒过来。

What type of bears do not spend their winters hibernating?

什么种类的熊不会眠呢?

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

去年眠的蝴蝶覆盖的森林面积比前年增加了35%。