(单词翻译:单击)
I just got up from a long nap and it feels really great to get some rest.
我刚刚睡了一大觉，休息一下感觉真好。
And outside there are lots of animals just getting ready for a very long rest,
外面的很多动物也准备长时间休息了吧，
because it's going to be winter soon.
因为不久就到冬天了。
Animals like groundhogs.
比如土拨鼠。
Groundhogs are little animals that are about half a meter long.
土拨鼠是只有半米长的小动物。
They live in the United States and Canada and spend a lot of their time in burrows that they dig into the ground.
它们生活在美国和加拿大，大部分时间都待在地上挖的洞穴里。
and right now groundhogs are trying to get everything ready for a perfect cozy den.
现在，土拨鼠正试着为一个完美舒适的巢穴做一切准备。
They're preparing for hibernation.
他们正在准备冬眠。
Hibernation is like a deep, deep sleep that some animals go into during the winter.
冬眠就像一些动物在冬天进行的深度睡眠。
They'll sleep for months and months and they don't wake up until spring.
它们睡几个月，到了春天才会醒。
Oh, those animals aren't necessarily sleepy, Squeaks.
吱吱，这些动物不一定是困了。
Hibernation is a way for animals to survive the colder winter months.
冬眠是动物在冷冬生存的方式。
You see, animals normally need plenty of food to survive,
你知道的，动物正常情况下需要大量的食物才能生存，
but during cold winter months, lots of the food that animals like to eat goes away.
但在寒冷的冬月，动物喜欢吃的许多食物都没了。
In snowy cold places, the leaves fall off the trees, fruit stops growing and even the bugs go away.
在寒冷多雪的地区，树叶从树上掉下来，水果停止生长，甚至虫子也消失了。
For animals that eat these things, it can be a hungry few months.
对于吃这些东西的动物来说，这几个月会很饿。
To survive, some animals will migrate, meaning they'll travel somewhere else where there's more food.
为了生存，一些动物会迁移，也就是说它们会去食物更多的地方。
Like birds that fly to somewhere warmer.
比如鸟类会飞到更温暖的地方。
Other animals like squirrels will store food away to eat when it's cold.
松鼠之类的其他动物会储存食物，以备天冷时吃。
But animals like groundhogs can't move somewhere else and they can't store enough food to last all winter.
但土拨鼠这类的动物不会搬到其他地方，也不能储存维持整个冬季的的充足食物。
That's right, Squeaks. They have to hibernate.
吱吱，你说得对。它们必须冬眠。
If a groundhog is hibernating, it doesn't matter if there isn't a lot of food around.
如果土拨鼠冬眠，周围的食物不够也没关系。
Because the groundhog is fast asleep.
因为它很快就睡着了。
I know you still need to wake up and eat after sleeping.
我知道你睡完觉后需要醒来吃东西。
But it's different for hibernating animals.
但冬眠的动物不同。
Because hibernating is more than a long nap.
因为冬眠不只是长时间睡觉。
Animals spend a long time preparing for hibernation.
动物需要为冬眠做长时间的准备。
Before they hibernate, a groundhog will spent weeks eating as much as possible.
土拨鼠冬眠前，需要花费数周的时间吃尽可能多的东西。
That little groundhog becomes a great big groundhog with a thick layer of body fat.
小小的土拨鼠会变大，有一层厚厚的脂肪。
Then once it's time, they'll cuddle up in their burrow and go to sleep.
一旦到了冬眠的时间，它们会蜷缩在洞里睡觉。
Now, normally when a groundhog goes to sleep, their body rests a little bit,
通常土拨鼠睡觉时，身体会休息一会儿，
but their lungs keep breathing and their heart keeps pumping blood normally.
但它们的肺仍保持着呼吸，心脏也一直在正常地泵血。
To keep working, the groundhogs lungs and heart need energy from the food they eat.
为了维持运转，它们的心脏和肺会从所吃的食物中获取能量。
But during the type of very deep sleep the groundhog goes into when they hibernate,
但土拨鼠冬眠进入深度睡眠时，
there are lungs and heart slowed way down.
它们心肺的跳动减慢。
Their heart only beats about five times a minute.
它们的心脏每分钟只跳动5次，
And they only breathe about twice a minute.
每分钟只呼吸两次。
They go so slowly. They don't use as much energy.
它们进行的非常缓慢，不需要消耗太多的能量。
And since the groundhogs body isn't using very much energy,
因为土拨鼠的身体不需要消耗太多的能量，
they don't have to wake up every day to eat more food,
就不必每天起来吃更多的食物了，
instead they can use the energy they've already stored.
只需要消耗储存好的能量就行了。
That's right, Squeaks. The groundhog uses the energy they stored up from eating all of that food in the weeks before they hibernate it.
吱吱，你说对了。土拨鼠利用的是冬眠前几周内吃东西储存的能量。
The layer of fat, the groundhog put on in the fall slowly gets used up for energy.
它们秋季长得脂肪层缓慢消耗，用作能量了。
And by the time the groundhog needs to wake up to eat, it's time for spring.
土拨鼠需要醒来吃东西的时候就到春天了。
Lots of different animals can hibernate, like bats, chipmunks and hedgehogs.
许多不同种类的动物也会冬眠，比如蝙蝠、金花鼠和刺猬。
Bats even hibernate in large colonies all huddled together to share more.
大堆蝙蝠甚至挤在一起冬眠来分享更多的东西。
Whoa, I don't know if robots need to hibernate, Squeaks.
噢，吱吱，我不知道机器人是否需要冬眠。
But maybe it's time for you to take a nap.
但或许你是时候去午睡了。
What do you think it would be like to hibernate all winter long?
你觉得整个冬天都在冬眠是什么感觉？
Can you think of any other animals that rest in the colder months?
你能想到其他在冬月休息的动物吗？
Ask a grown-up to help you leave a comment below or send us an email to kids@scishow com.
找个大人帮忙在下方留言或发邮件至kids@scishow com。
Thanks and we'll see you next time, here at the Fort.
感谢您收看，我们下期见，沃斯堡等你哦！
