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Hi everyone!
大家好!
Squeaks and I were out for a walk near the pond by the Fort, and we noticed that it was completely covered with ice.
我和吱吱在沃斯堡附近的池塘边散步，我们注意到池塘完全被冰覆盖了。
And that wasn’t the only change we noticed, either… right, Squeaks?
这也不是我们注意到的唯一变化，对吧，吱吱?
Yes! Many of the trees around the pond didn’t have leaves anymore…and some of the animals that we often see on the pond’s banks…like turtles…
是的! 池塘周围的许多树都没有叶子了，我们经常在池塘岸边看到的一些动物，比如乌龟……
well, we didn’t see any of them today!
我们今天一个都没看到!
Oh! good question! Animal life around a pond looks a lot different in the winter than it does in the summer.
哦!好问题! 池塘周围的动物在冬天和夏天看起来有很大的不同。
In the summer, the Sun is up and shining for a long time every day.
在夏天，太阳升起后，每天照耀很长一段时间。
All of that warm heat keeps the pond water from freezing into ice.
所有这些温暖的热量使池塘的水不会结冰。
So sometimes we see fish jumping out of the water to grab insects to eat.
所以有时我们看到鱼跳出水面抓昆虫吃。
And we often spot turtles sunning themselves on the pond bank.
我们经常看到海龟在池塘岸边晒太阳。
Though they might slide into the pond if we — or anything else — get too close.
不过，如果我们——或者其他什么东西——靠得太近，它们可能会滑到池塘里去。
But when fall comes, the days feel shorter.
但是当秋天来临时，白天感觉变短了。
There’s not as many hours of sunlight every day.
冬天每天没有那么多小时的太阳。
And lots of times… the top of the pond freezes over completely!
很多次，池塘的顶部完全结冰了!
Frozen water and cold temperatures cause the animals that live around and in the pond to act differently than they do in the summer.
冰冻的水和寒冷的温度导致生活在池塘周围和池塘里的动物的行为与夏天时不同。
Well, for one thing…
嗯，一方面……
If we could see through the ice, all the way down to the bottom of the pond, we’d find the fish, all uddled together, because that’s where the warmest water is right now.
如果我们能透过冰，一直看到池塘的底部，我们就会发现鱼，都聚在一起，因为那里是此刻最热的水。
Ha, don’t get me wrong… even the warmest water in the pond would still be much too cold for me!
哈，别误会我的意思……即使是池塘里最温暖的水对我来说也还是太冷了!
Well, some animals, like people, have to keep their bodies at about the same temperature all the time.
嗯，有些动物，比如人类，必须让他们的身体一直保持在相同的温度。
But fish don’t. A fish’s body temperature changes.
但是鱼不需要。 鱼的体温会发生变化。
If the water is warmer, the fish’s body gets warmer.
如果水变暖，鱼的身体也会变暖。
And if the water gets colder, the fish’s body gets colder too.
如果水变冷，鱼的身体也会变冷。
Even in an almost-freezing pond!
即使是在一个几乎结冰的池塘里!
But the fish have a special way to keep warm in the cold water, or at least warm enough so that the cold water doesn’t bother them.
但是鱼有一种特殊的方法在冷水中保持体温，或者至少保持足够温暖，这样冷水就不会困扰它们。
They breathe more slowly, and they don’t swim around very much, if at all.
它们呼吸更慢，也不怎么游来游去。
That helps them to save their bodies’ energy, the energy they get from eating food.
这有助于他们保存身体的能量，从食物中获得的能量。
That way, they can use their energy to stay warm instead, even if the pond gets very, very cold!
这样，即使池塘变得非常非常冷，它们也可以用它们的能量来保持体温!
Oh, good question, Squeaks!
哦，吱吱，问得好!
Squeaks was wondering about our turtle friends.
吱吱想知道我们的乌龟朋友。
Well, a turtle’s body is like a fish’s body in some ways.
嗯，乌龟的身体在某些方面和鱼的身体很像。
Its body temperature also doesn’t stay the same all the time.
它的体温也不会一直保持不变。
So turtles hang out at the bottom of ponds in the winter too.
所以，海龟冬天也会在池塘底部出没。
Some turtles also dig down into the bottom of the pond and bury themselves until things get warmer.
有些海龟还会把自己埋在池塘底部，直到水温变暖。
The mud and sand acts like a blanket.
泥和沙就像毯子一样。
It may not seem like much to us, but it’s enough to keep them warm until the ice melts, and the Sun warms the water up again!
这对我们来说可能没什么，但这足以让它们保持温暖，直到冰融化，太阳再次使水温变热!
Now, some animals, like birds, do have to keep their body temperatures about the same all the time.
现在，一些动物，比如鸟类，确实需要一直把体温保持在相同的水平。
So they often find a cozy nook in a tree somewhere and rest a lot during the winter.
所以它们经常在树上找一个舒适的角落，在冬天好好休息。
And when they do come out, they fluff their feathers out.
当它们出来的时候，它们会把羽毛抖松。
By doing this, they trap warm air next to their bodies.
通过这样做，它们将热空气保留在身体旁边。
Their feathers kind of act like a puffy coat to keep them warm!
它们的羽毛就像一件蓬松的外套，可以让它们保暖!
Oh, good idea!
哦,好主意!
Squeaks wants to learn more about how animals survive in the winter!
吱吱想了解更多关于动物如何在冬天生存的知识!
We’ll go check out the Fort’s library to see what books we have that might be able to help us!
我们去沃斯堡的图书馆看看有什么书能帮到我们!
Thanks for joining us here on SciShow Kids.
感谢收看少儿科学秀。
If you want to keep learning and having fun with me, Squeaks, Mister Brown, and all of our other friends,
如果你想和我、吱吱、布朗先生以及我们所有的其他朋友一起学习和玩，
be sure to hit the subscribe button,
一定要点击订阅按钮，
and we'll see you next time here at the Fort!
我们下次沃斯堡见!
