显示双语:

Hey guys! 00:12
Hey there, Squid! 00:13
How's it going? 00:14
TGS: Mmmph. 00:15
I’m kinda cranky right now. 00:16
Jessi: Oh no. 00:18
No one wants that. 00:19
What’s bothering you? 00:20
TGS: Cruise ships. 00:21
Jessi: Cruise ships? 00:23
TGS: Yeah, cruise ships. 00:24
You know, those giant boats that you people sail around in. 00:26
There’s been one floating above me all day, and I can’t get any sleep! 00:30
I mean, it’s huge! 00:36
And noisy! 00:38
It’s like a floating city! 00:39
So, instead of sleeping, I’ve just been bobbing awake, staring at it, and wondering. 00:41
How does a giant ship like that float on the water? 00:47
I mean, heavy things sink in water, right? 00:52
Like when someone up there tosses a rock into the ocean -- which happens, you know -- it 00:55
sinks. 01:01
So why does that heavy ship get to float? 01:02
Jessi: The reason a big, heavy ship like that can float has to do with its shape. 01:05
Whether an object sinks or floats to begin with has a lot to do with something called 01:09
displacement. 01:13
Displacement is when an object displaces, or pushes aside, water. 01:14
So, like, when you drop an ice cube into an already-full glass of water, some water spills 01:18
out. 01:23
TGS: That’s displacement? 01:24
Jessi: That’s right -- the amount of water that spills out is actually equal to the amount 01:25
of space the ice cube takes up! 01:29
Or think about when you take a bath. 01:31
TGS: Hold up. 01:32
Wait. 01:33
What’s a bath? 01:34
Jessi: Well, up here, we like to clean ourselves up by soaking in a tub full of nice warm, 01:35
soapy water. 01:39
TGS: That sounds gross! 01:40
Do that mean that humans just walk around all day getting dirty? 01:41
If you spent all of your time in the water like me, you’d never get dirty in the first 01:46
place. 01:51
Jessi: Well, not everyone’s the same, right? 01:52
I know some of the people watching here know what a bath is. 01:54
TGS: Mmmrph, okay. 01:56
Jessi: So, say you fill the bathtub up -- all the way to the top. 01:57
And then you climb in. 02:01
Now there’s water on the floor. 02:02
Lots of water. 02:04
The amount of water equal to the amount of space that you took up! 02:05
Now, one of the secrets to an object being able to float, is that it has to displace 02:09
enough water so that the water it pushes aside weighs as much as it does. 02:14
Alright, so, say you’re in the tub and you want to do an experiment. 02:19
You can bring in a small bowl, and some rocks from your rock collection. 02:21
If you put the bowl in the water, it’ll float. 02:24
Because the bottom of the bowl is displacing some water. 02:27
And the amount of water that it’s pushing aside weighs the same as the bowl. 02:29
Now, drop a little rock in there. 02:34
Add another, and another. 02:36
The bowl is getting heavier, so it’s sinking a little bit each time. 02:37
But even though the bowl is heavier, it’s also displacing more water -- so the amount 02:41
of water that it’s pushing aside still weighs the same as the bowl. 02:45
TGS: So what does that mean for the cruise ship? 02:48
Why doesn't it sink? 02:51
Jessi: Well, ships are designed to displace as much water as possible. 02:52
They’re realllly wide, and their bottoms tend stretch down really far, so they push 02:55
aside a lot of water. 03:00
Plus, a ship has lots of empty space inside it -- a lot of it is hollow -- which helps 03:01
to keep it light, compared to the huge amount of water that it’s displacing. 03:07
And voila... it floats. 03:11
TGS: OK, OK. 03:12
So that giant, noisy party over my head right now is displacing enough water that it can 03:13
float. 03:20
Well, you people may be noisy, but the fact that you figured out how to build giant metal 03:21
things that float… that’s pretty clever, I’ll give you that. 03:26
Jessi: Yeah, and I don't know about you, but some of my favorite things tend to clever 03:30
and noisy. 03:34
Thanks for joining Squid and me, learning about displacement. 03:35
See you next time! 03:38
TGS: Bon voyage! 03:39

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[中文]
嘿,大家!
嘿,Squid!
最近怎么样?
TGS:嗯哼。
我现在有点烦躁。
Jessi:哦,不。
没人愿意这样。
是什么困扰着你?
TGS:游轮。
Jessi:游轮?
TGS:对,游轮。
你知道,那些你们人类在上面航行的巨大船只。
有一艘整天漂浮在我上方,我根本睡不着!
我的意思是,它太大了!
而且很吵!
就像一个漂浮的城市!
所以,我没有睡觉,而是睁着眼睛盯着它,想着。
那么大的船是怎么漂浮在水上的?
我的意思是,重东西在水里会沉,对吧?
就像当上面的人把石头扔进大海——这种事发生过,你知道——它会沉。
沉下去。
那么为什么那么重的船会漂浮?
Jessi:那么大那么重的船能够漂浮的原因与它的形状有关。
一个物体是否会沉或漂浮,最初与一个叫做“排水量”的东西有很大关系。
排水量是指物体排开或推开的水量。
所以,比如,当你把一块冰块放入已经装满水的杯子里,一些水会溢出来。
TGS:那是排水量?
out.
TGS: That’s displacement?
Jessi:没错——溢出的水量实际上等于冰块占据的空间!
或者想想你洗澡的时候。
Or think about when you take a bath.
TGS:等一下。
等等。
什么是洗澡?
Jessi:嗯,在我们这里,我们喜欢通过浸泡在装满温水和肥皂水的浴缸里来清洁自己。
TGS:听起来很恶心!
这意味着人类整天都在变脏吗?
如果你像我一样把所有时间都花在水里,你根本不会变脏。
If you spent all of your time in the water like me, you’d never get dirty in the first
place.
Jessi:嗯,不是每个人都一样,对吧?
我知道这里的一些观众知道什么是洗澡。
TGS:嗯哼,好吧。
Jessi:所以,假设你把浴缸装满水——一直装到顶部。
然后你爬进去。
现在地板上有水。
很多水。
水量等于你占据的空间!
现在,物体能够漂浮的一个秘密是,它必须排开足够的水,以便它推开的水的重量与它本身的重量相等。
enough water so that the water it pushes aside weighs as much as it does.
好了,假设你在浴缸里,想做个实验。
你可以拿一个小碗和一些你收藏的石头。
如果你把碗放进水里,它会漂浮。
因为碗的底部正在排开一些水。
它推开的水量与碗的重量相等。
现在,放一块小石头进去。
再放一块,再放一块。
碗越来越重,所以它每次都会沉一点。
但即使碗更重,它也在排开更多的水——所以它推开的水量仍然与碗的重量相等。
of water that it’s pushing aside still weighs the same as the bowl.
TGS:那么这对游轮意味着什么?
为什么它不沉?
Jessi:嗯,船的设计是尽可能多地排开水。
它们非常宽,它们的底部通常伸展得很远,所以它们推开了很多水。
此外,船内部有很多空隙——很多地方是空的——这有助于保持它的轻盈,与它排开的巨大水量相比。
Plus, a ship has lots of empty space inside it -- a lot of it is hollow -- which helps
to keep it light, compared to the huge amount of water that it’s displacing.
于是...它漂浮了。
TGS:好的,好的。
所以,我头顶上那个巨大的、吵闹的派对正在排开足够的水,以便它能够漂浮。
好吧,你们人类可能很吵,但你们能够制造出能够漂浮的巨大金属物体...这很聪明,我承认。
Well, you people may be noisy, but the fact that you figured out how to build giant metal
things that float… that’s pretty clever, I’ll give you that.
Jessi:是的,我不知道你怎么想,但我最喜欢的一些东西通常是聪明和吵闹的。
感谢大家和Squid一起学习排水量。
Thanks for joining Squid and me, learning about displacement.
下次见!
TGS:一路顺风!
[英语] Show

重点词汇

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词汇 含义

cranky

ˈkræŋki

A2
  • adjective
  • - 易怒的 (yì nù de)

bothering

ˈbɑːðərɪŋ

A2
  • verb
  • - 打扰 (dǎrǎo)

cruise

kruːz

A2
  • noun
  • - 游轮 (yóu lún)

float

floʊt

A1
  • verb
  • - 漂浮 (piāofú)

displacement

dɪsˈpleɪsmənt

B2
  • noun
  • - 位移 (wèiyí)

sink

sɪŋk

A1
  • verb
  • - 下沉 (xiàchén)

shape

ʃeɪp

A1
  • noun
  • - 形状 (xíngzhuàng)

object

ˈɒbʤɛkt

A2
  • noun
  • - 物体 (wùtǐ)

soaking

soʊkɪŋ

A2
  • verb
  • - 浸泡 (jìn pào)

experiment

ɪkˈsperɪmənt

B1
  • noun
  • - 实验 (shíyàn)

hollow

ˈhɒləʊ

A2
  • adjective
  • - 空的 (kōng de)

voila

vwala

B1
  • interjection
  • - 看 (kàn)

clever

ˈklɛvər

A2
  • adjective
  • - 聪明的 (cōngmíng de)

noisy

ˈnɔɪzi

A2
  • adjective
  • - 吵闹的 (chǎonào de)

wondering

ˈwʌndərɪŋ

A2
  • verb
  • - 好奇 (hǎoqí)

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