未登录,请登录后再发表信息
最新评论 (0)
播放视频

它们都是活的!

It's Alive!

Squeaks 活着真好呀!
Squeaks, It’s a great day to be alive!
是的 我确实是活着的——你也是
And yes, I’m really living — and so are you!
可是 那是什么意思呢?
But what does that mean?
听起来像是一个很简单的问题 对吧?
It sounds like a pretty simple question, right?
我们周围有很多有生命的东西……也有没有生命的东西
There are living things all around us…as well as things that are not living.
一分钟前 我环顾四周 看到地上有一块石头——它不是
When was looking around the Fort’s playground a minute ago, I saw a rock — which is not
有生命的东西
a living thing.
可是在那棵树上唱歌的鸟儿呢?
But the bird singing in the tree over there?
肯定是有生命的了
That’s definitely living.
那棵树也是
And the tree is, too!
但是 有时候关于什么是有生命的 什么是没有生命的 这样的问题
But sometimes the answer to the question of what’s a living thing, and what’s not,
回答起来不是那么容易的
can be a little tricky.
当我看电脑或手机里的视频时 听见一只鸟儿在唱歌——但是 电脑和手机当然
I can hear a bird sing when I watch a video on a computer or phone—but, of course, computers
不是有生命的东西……即使它们会发出声音
and phones aren’t living things … even though they might make sounds exactly like
就像有生命的东西那样
things that are alive.
生物学家们研究了各种类型有生命的东西——所以对于什么是有生命的
Scientists called biologists study all sorts of living things — so they’re the experts
什么是没有生命的 他们是专家
on what things are living, and what things are not.
在研究了各种生命以后 他们发现 一切活着的东西 或者曾经
After studying all kinds of life, they discovered that everything that’s alive, or was once
活着的东西 都有一些共同点
alive, has a few things in common.
你可以把它们当做所有有生命的东西遵循的规律
You can think of them kind of as rules that all living things follow.
那么 让我们看看都有哪些规律吧
So let’s take a look at some of these rules!
规律一:有生命的东西需要能量
Rule number one: living things need energy.
你需要能量玩耍和做功课
You need energy to play and to do your school work.
植物需要能量长出新叶子并长大
A plant needs energy to make new leaves and to grow.
甚至一些细菌想要使我们生病都需要能量
Even some kinds of germs use energy when they make us sick!
有生命的东西通过很多途径获得能量 但是它们都需要能量来维持生命
Living things get energy in lots of different ways, but they all need it to stay alive.
规律二:有生命的东西会生长 会发生变化
Rule number two: Living things grow and change.
与你还是婴儿的时候比 你现在更大了——但你还没有大到
You’re bigger than you were than when you were a baby — but you’re not as big as
将来某一天那样
you will be someday!
和你一样 所有有生命的东西都会生长和变化——不论那是否意味着
And just like you, all living things grow and change — whether that means growing
会像树那样长大 长出更多的树枝和新的树叶
up, or getting more branches and making new leaves, like trees do.
规律三:有生命的东西会繁殖
Rule number three: Living things reproduce.
繁殖意味着再造一些东西
Reproduce means to make more of something.
当有生命的东西繁殖的时候 它们造出更多同样的东西
When living things reproduce, they make more of themselves!
对动物来说 那意味着生像小猫和小狗那样的小宝宝 它们会长大
For animals, that means having babies like kittens and puppies that will grow up to become
长成成年的猫和狗
adult cats and dogs.
对植物来说 那通常意味着产生种子 种子可以长成新的植物
For plants, that usually means making seeds that can grow into new plants.
规律四:有生命的东西会对周围的世界作出反应
Rule number four: Living things respond to the world around them.
换句话说 当有生命的东西周围的环境发生变化时 它也会有所改变
In other words, when something around a living thing changes, that living thing changes too.
例如 当你感到冷时 你会打哆嗦或者穿上外套
For example, when you get cold, you might shiver or put on a coat.
这两种方法都会让你暖和起来
Both of these things will help warm you up.
那就是你对冷作出的反应
So that’s how you respond to the cold.
同样 在秋天 当白天开始变短 天气开始变
And in the same way, in autumn, when the days start to get shorter and the weather gets
凉 一些树的树叶会落下
cooler, some trees lose their leaves.
它们是在对季节的变化作出反应
They are responding to the change of seasons!
问得好 Squeaks
Great question, Squeaks!
落在地上的树叶呢?
What about the leaves that have fallen to the ground?
它们是有生命的还是没有生命的?
Are they living or not living?
地上的落叶……即使是棕色的枯萎的……也是有生命的东西……大树的一部分……
Those leaves on the ground…even the brown, dead ones…were part of a living thing…the
所以生物学家认为 我们仍然应该称它们是有生命的
tree…so biologists say we still call them living things.
现在 好像这些规律里面缺了些什么
Now, it might seem like there’s some things missing from the rules.
好像是 ……移动吗?
Like, what about … moving?
你仔细想想 很多有生命的东西都会移动
When you think about it, a lot of living things move.
但是不是都会移动
But not all of them do.
例如 植物不会站起来走路 但是他们仍然是有生命的
Plants, for example, don’t get up and walk around, but they’re still alive!
有一些会移动的东西始终是没有生命的 像影子或者手表上的指针
And there are things that move that were never alive, like shadows, or the hands on a watch.
影子不需要能量
Shadows don’t use energy.
手表不会繁殖或者生长
And watches don’t reproduce or grow.
所以 如果你像生物学家那样思考 那么 一个东西必须遵循所有的规律
So, if you’re thinking like a biologist, then something has to meet all of the rules
才能被认作有生命的东西
in order for it to be considered a living thing.
如果没有遵循 那它就不是有生命的
If it doesn’t, then it’s not alive.
现在 你是否准备好测试一下对有生命的东西的认识呢?
Now, are you ready to test what you know about living things?
游戏时间到!
It’s game time!
我说出名字 你来判断它是有生命的还是没有生命的
I’ll name a thing, and you have to decide whether it’s alive or not.
第一个 蚯蚓是有生命的还是没有生命的?
First, is an earthworm living or not living?
如果你说“有生命的” 你就是对的
If you said ‘living,’ you’re right!
蚯蚓需要能量在泥土里蠕动
Earthworms need energy to wriggle through the soil.
它们也生长
They also grow.
它们还产卵并把卵孵化成蚯蚓宝宝 也就是繁殖
And they lay eggs that hatch into baby earthworms, which means they reproduce.
如果你把一条蚯蚓拿起来 你就知道它是怎么对周围的世界
And, if you’ve ever held an earthworm up, you know they respond to changes in the world
作出反应了
around them.
如果你把它拿起来 它就会设法扭动身体逃走
If you pick one up, it tries to wiggle away!
我们再试一个
Let’s try another one.
云是有生命的还是没有生命的?
Is a cloud living or not living?
如果你说“没有生命的” 那你就对了
If you said ‘not living,’ you’re right!
云看起来像会生长 因为它会变大 比如说 在下雨之前
A cloud may look like it grows because it might get bigger, say, before it rains.
但是 云不会使用能量 它也不会生云宝宝……所以它是不会繁殖的
But a cloud doesn’t use energy, and it doesn’t have baby clouds…so it doesn’t reproduce.
既然它没有遵循所有的规律……那么它就是没有生命的
And since it doesn’t follow all of the rules…it’s not living!
这根树枝呢?
What about this stick?
它是有生命还是没有生命的?
Is it living or not living?
如果你说“有生命的” 那么你就是对的
If you said ‘living,’ you’re right!
树枝是有生命的 是因为它是树的一部分
This stick is living because it was once part of a tree.
由于树是有生命的 那么树枝也应该是有生命的
And, since the tree is a living thing, then the stick can also be called a living thing.
你可以用这些简单的规律研究你在周围看到的一切东西
You can use these easy rules to study everything you see around you!
去外面走一走 花点时间停下来想一想你看到的东西——冰锥
Go for a walk outside, and take some time to stop and think about what you see — icicles,
橡子 鹅卵石 草——寻找我们提到的线索:它们是有生命的
acorns, pebbles, and grass — and look for the clues we talked about: Are they alive
还是没有生命的?
or not?
谢谢收看本期的儿童科学秀
Thanks for joining us on SciShow Kids.
如果你有什么问题 请找一个大人帮你在下面给我们留言
If you have a question for us, ask a grownup to help you to leave us a comment down below,
或者发送电子邮件到Kids@SciShow.com
or to send an email to Kids@SciShow.com!
谢谢 我们下次再见
Thanks, and we’ll see you next time here at the Fort!

发表评论

译制信息
视频概述

我们生活的环境里有有生命的东西,也有没有生命的东西,生物学家总结了四点规律帮你区分,快来试试吧!

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=Gy60BqCnTG4

相关推荐