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为什么狗狗会大口喘气? – 译学馆
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为什么狗狗会大口喘气?

Why Do Dogs Pant?

最近外面越来越热了 吱吱和我总是
It’s been getting really hot outside recently, and Squeaks and I are coming up with all kinds
想尽各种办法给自己降温
of creative ways to stay cool.
我们可以在室外找一片树荫 或者在室内吹风扇
We can find shade when we’re outside, and we can use a fan to blow the air around inside.
而我们的狗狗朋友也喜欢在风扇周围转悠
We have friends whose dogs really like hanging out near the fan.
但当我们外出时 狗狗们却有自己的秘法
But when we’re outside and it’s hot out, there’s something else they do: they breathe
快速的大口换气 有时候还把舌头伸出来
in and out really fast, sometimes with their tongues sticking out.
我们称之为气喘 对于狗狗们来说 是降温的好方法
That’s called panting, and for dogs, it’s a great way to keep cool.
对于我们人类来说 体温升高时会出现一种现象
For us humans, there’s something that happens to our bodies when we get very warm.
小朋友们能猜到那是什么吗
Can you guess what it is?
[吱吱]
[Squeaks squeaks]
对了!我们会流汗!
That’s right, we sweat!
水分以及盐分等会顺着皮肤
Water, along with some other stuff, like salt, goes from inside our bodies to outside on
排出体外 帮助降温
our skin, and that helps us cool off!
流汗能帮助我们降温是因为水会蒸发
Sweat cools us off because the water evaporates, meaning that it changes from a liquid to a
就是从液体变为气体的过程
gas and disappears into the air.
当汗液变干 就是说他们从液体变成了气体
That’s what happens when sweat dries — the liquid water turns into a gas.
如果你曾在身上泼过水
And if you’ve ever spilled some water on yourself, you know that it can start to feel
当水分蒸发时你也会感到凉爽
very cold as it dries!
这是因为你身体的一部分热量帮助水分蒸发
That’s because some of the heat from your body is being used to help the water evaporate.
水分带走了你身体中的热量
Since your body is losing heat as it moves into the water on your skin, you feel less
因此你也会感觉不那么热了
hot.
所以 流汗是降温的最佳方式
So, sweating is a great way to cool down.
但是 有些动物不能像人类一样流汗 比如狗狗
But a lot of animals can’t sweat as well as humans can — including dogs.
狗狗们只能通过掌垫出汗
Dogs can only sweat through the pads on their paws, which isn’t enough to cool them down
但这不足以降温
very much.
他们身上的毛太厚重 总得想办法在热天
But with all that warm fur, they definitely need to be able to keep cool on a hot, sunny
降温
day!
因此 他们即使不能流汗 也有其他方式
So even though they mostly can’t sweat, they have other ways to keep themselves cool
降温
in the heat.
[吱吱]
[Squeaks squeaks]
没错!
That’s right!
大口喘气
Like panting.
大口喘气会帮助狗狗降温
Panting helps dogs keep cool in a way that’s actually very similar to how sweating keeps
与流汗帮助我们降温的原理相似
/us/ cool.
我们已经知道了汗液蒸发时会让我们感到凉爽
We know that sweat keeps us cool by drying off.
你能想到当狗狗大口喘气的时候什么在蒸发吗?
Can you think of something that might be drying off as dogs pant?
[吱吱]
[Squeaks squeaks]
猜的好 吱吱!
Good guess, Squeaks!
狗狗的嘴巴里有很多唾液 或者说口水!
There’s lots of saliva, or spit, in a dog’s mouth!
为了降温 狗狗们必须蒸发自己的唾液
To cool themselves off, dogs pant to evaporate their saliva.
他们身体中的热量帮助唾液蒸发 狗狗也就不会感到太热了
The heat from their bodies helps the saliva dry, so the dog gets less hot.
这就跟我们通过皮肤排汗一样 只不过他们用的是
It’s a lot like how we sweat through our skin, except dogs use saliva in their mouths
嘴里的唾液!
instead!
当狗狗们大口喘气时 空气在他们的口中飞快流动
As they pant, dogs breathe really fast to move more air in and out through their mouths.
呼气时 他们呼出了热气
When they breathe out, they move the warm, wet air away, and when they breathe in, cooler,
吸气时 就变成了凉爽的空气 并且让更多的唾液蒸发得更快
drier air can take its place and evaporate more saliva faster, so it takes less time
狗狗降温的时间越来越短 也就感到越来越凉快
for a dog to go from too hot, to just right.
[吱吱]
[Squeaks squeaks approval]
是的 这真是个降温的好方法 但比起流汗 降温速度还是更慢
Yeah, it is a pretty awesome way to cool off, but it can work a little slower than sweating.
狗狗通过蒸发唾液带走热量 还需要不少时间
It takes a while for a dog to evaporate enough saliva to get a lot of heat out of its body.
所以 如果你看到狗狗正在快速喘气
So when you see a dog panting really quickly, that’s a sign that it’s too hot and is
这意味着他们太热了 需要时间降温
taking some time to cool down.
也许我们也该去凉快一下了 对吧吱吱?
Maybe we should go and cool off, too, huh Squeaks?
[吱吱]
[Squeaks squeaks]
感谢您收看本期节目!
Thanks for joining us!
如果你想要跟我和吱吱学习更有趣的知识
If you want to keep learning and having fun with Squeaks and me, hit the subscribe button,
不要忘记订阅频道哦!
and we’ll see you next time here at the Fort!

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视频概述

天气太热时,人会通过排汗降温,可狗狗们又是怎样降温的呢?

听录译者

收集自网络

翻译译者

Hermes赫斯

审核员

审核团MG

视频来源

https://www.youtube.com/watch?v=zG34P62R70g

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