ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

鱼是怎么呼吸的? – 译学馆
未登陆,请登陆后再发表信息
最新评论 (0)
播放视频

鱼是怎么呼吸的?

How Do Fish Breathe?

我和Squeaks收养了一条宠物金鱼
Squeaks and I are adopting a pet goldfish!
他住在鱼缸里 是一个游泳高手
He lives in a fish tank, and he’s a great swimmer!
实际上 这个小家伙真的很适应水里的生活
In fact, this little guy’s whole body is really suited to life in the water.
他强壮的鱼鳍帮他游泳 还可以在水中睁着眼睛
He has great fins to help him swim, and eyes that can stay open in the water.
这些特别的身体部位使他能够生活在水中的家里 我们称之为适应
These special body parts help him to live in his underwater home, so we call them adaptations.
我们的小鱼朋友能在鱼缸或鱼塘里生存
There’s one adaptation that’s really important for our new fish friend to survive in a fish
有一种适应是非常重要的
tank or pond.
他必须能在水下呼吸
He needs to be able to breathe underwater.
人不能在水下呼吸是因为那里没有空气
People can’t breathe underwater because there’s no air.
我们必须屏住呼吸 或使用像水中呼吸装置这样的专门设备来获得空气
We have to hold our breath, or use special equipment like scuba gear to get air.
但是我们的金鱼不用屏住呼吸 也不需要水中呼吸装置
But our goldfish isn’t holding his breath, and he didn’t bring scuba gear!
实际上 他不是在空气中呼吸 而是在水中呼吸的
Instead of breathing air, he actually breathes water.
人类 鱼 还有其他一切动物 都为了一个理由呼吸
Humans, fish, and all kinds of other animals have to breathe for the same reason: we all
我们都需要一种叫氧气的东西
need something called oxygen.
尽管空气看起来不像是由什么东西构成的
Even though air might not seem like it’s made of anything, it’s actually made up of lots
但是 其实它是由很多极其微小的看不到的分子构成的
of tiny things called molecules that are way too small for you to see.
氧气就是构成空气的其中一种物质 它是很重要的
Oxygen is one of the ingredients in air, and it’s really important: it helps your body
它帮助身体产生能量
make energy!
分解食物 活动肌肉 甚至动动脑子
You need oxygen to break down your food, move your muscles, and even just to think with
都是需要氧气的
your brain.
氧气存在于空气中 而你需要让它进入体内 并且充满整个身体
There’s oxygen in air, but you need it to get into and all around your whole body!
所以 你需要一个叫肺的器官帮你获得氧气
So, you have special organs called lungs to help get that oxygen.
当你吸气的时候 你能感受到你的肺因充满空气而膨胀 像气球一样
When you breathe in, you can feel your lungs expand full of air, just like a balloon.
一旦肺里充满了空气 它就会在你呼气之前
Once they’re full of air, your lungs pull the oxygen that you need out of the air before
从空气中分离出氧气
you breathe out.
氧气进入你的血液 并扩散到整个身体
That oxygen goes into your blood and travels all throughout your body.
我们周围到处都是空气 所以只要你能呼吸 就可以获得氧气
There’s air all around us, so as long as you we breathe, you can get oxygen.
陆地动物有各种形状和大小的肺 而生活在水里的动物
Land animals can have all different shapes and sizes of lungs, but animals that live
像鱼 也需要氧气
underwater, like fish, need oxygen, too!
鱼没有肺 它们生活的环境中没有空气
Fish don’t have lungs, and there isn’t any air around them.
像我们养的金鱼这样的动物就需要用另一种方式来获得氧气
Animals like our goldfish need to use another way to get their oxygen.
猜猜会是什么呢
And guess what?
水里充满了氧气 就像空气一样
Water is full of oxygen, just like the air is!
所以鱼可以直接从他们生活的水中获得氧气
So fish can get their oxygen straight from the water they live in.
他们只需要适应从水中获得氧气
They just need an adaptation to get the oxygen out of the water.
大多数水下生物不是用肺 而是用另一种很特别的身体部位
Instead of lungs, most underwater creatures have another special body part that allows
直接从水中吸收氧气 那就是腮
them to pull oxygen straight out of the water, called their gills.
腮就像鱼脸两侧的小缝
Gills look like little slits on either side of a fish’s face.
鱼的腮就像人的肺那样工作
A fish’s gills work a lot like our lungs.
当鱼把水吞进嘴里 水会从腮流出
When a fish pulls in water through its mouth, the water goes back out through its gills.
在水流经腮的时候 也经过鱼的血液
As the water runs through the gills, it goes right past the fish’s blood.
水中的氧气被血液吸收
The oxygen in the water flows into the fish’s blood, and now the fish can use the oxygen
这样鱼的整个身体就可以获得氧气了
all over its body!
所以 鱼是用腮在水里呼吸 而不是用肺在空气中呼吸的
The fish is basically breathing water with gills, instead of air with lungs.
除了鱼 还有一些动物也用腮呼吸
Other types of animals besides fish use gills, too.
螃蟹 龙虾 蜗牛甚至一些小虫 都是用腮呼吸的
Crabs, lobsters, snails, and even some bugs use gills to breathe!
尽管我们获得氧气的方法不同
So, even though we both have very different ways of getting it, our goldfish needs oxygen
我们的金鱼也是像我一样需要氧气的
just like I do.
对吗 小鱼
Isn’t that right, little fish?
你觉得我们该给这条鱼起个什么名字呢
What do you think we should name our new fish?
让家长帮你在下面留言 或者发送邮件到kids@scishow.com
Ask a grown-up to help you leave a comment below, or you can send us an email at kids@scishow.com
谢谢大家 下期节目再见
Thanks, and we’ll see you next time here at the Fort!

发表评论

译制信息
视频概述

人需要从空气中获得氧气用肺呼吸,而鱼怎么呼吸的呢?鱼和人一样,也需要氧气来呼吸,只不过它是从水中获得氧气的。而鱼的呼吸器官是腮,不是肺。

听录译者

收集自网络

翻译译者

Jessie

审核员

与光同尘

视频来源

https://www.youtube.com/watch?v=zj5v3n6Nlm8

相关推荐