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为什么蟑螂不容易死亡?

Why don't cockroaches die easily? | #aumsum

It’s AumSum Time.
这里是奥萨小课堂
Why don’t cockroaches die easily?
为什么蟑螂不容易死亡?
Because they have Iron Man’s Armor.
因为它们有钢铁侠一样的盔甲
No.

Cockroaches are highly resilient creatures.
蟑螂是适应力极强的生物
They even survived the mass extinction that wiped out dinosaurs.
它们甚至在恐龙大灭绝时代幸存了下来
Wow.
哇哦
That’s impressive.
真是令人钦佩
Cockroaches don’t die easily because they have a strong, flexible exoskeleton.
蟑螂生命力强 因为有强壮灵活的外骨骼
It helps them withstand weights which are up to 300 to 900 times their own body weight.
可以帮助它们承受300-900倍于自身的重量
In addition to this.
除此之外
Cockroaches can live without food for a month and a week without water.
蟑螂不吃东西能活一个月 缺水能活一周
What?
这是真的吗
Yes.
当然了
Cockroaches can even hold their breath for around 20 minutes in water.
蟑螂甚至可以在水中屏息20分钟左右
And can survive without a head for a week.
并在没有头的情况下存活一周
Stop bluffing.
别吓唬人了
Without a head, they won’t be able to breathe.
没有了头 它们根本无法呼吸
No.

They have tiny holes on their bodies which help them breathe.
它们身上有小孔 可以帮助它们呼吸
Thus preventing them from dying instantly.
以防它们立马死掉
What is arthritis?
什么是关节炎?
It is a chemical formed by mixing Hydrochloric acid and Sulfuric acid.
它是盐酸与硫酸混合后形成的化学物质
oh, Dude!
哦 兄弟!
From where do you get such ideas?
你这是听谁说的呀
To explain arthritis, we need to first understand what a joint is.
为了解释关节炎 我们首先要了解关节
A joint is a place where two bones meet.
关节 就是两根骨头相连的地方
When there is inflammation, swelling or pain in one or more joints.
当一个或多个关节出现炎症 肿胀或疼痛
Then it is termed as arthritis.
这种现象就叫做关节炎
The cause of arthritis depends upon the type of arthritis.
关节炎的起因取决于关节炎的类型
Rheumatoid arthritis is an autoimmune disorder.
风湿性关节炎是一种自身免疫性疾病
In this disorder.
对这种紊乱疾病
Our immune cells mistakenly start attacking the tissue surrounding a joint.
体内的免疫细胞错误地攻击关节周边组织
And thus, damage it.
并破坏了它们
This leads to inflammation, swelling and pain in the joint.
使得关节处产生炎症 肿胀和疼痛
Osteoarthritis occurs when the cartilage that cushions the ends of bones in a joint.
缓冲骨末端的关节软骨逐渐被破坏 磨损
Gradually breaks down and wears away.
这时就会发生骨关节炎
As a result.
结果
The bones begin to rub against each other, causing swelling and pain in that joint.
两骨相互摩擦 导致关节处肿胀疼痛
Why is space black?
为什么太空是黑色的?
Because somebody forgot to pay the electricity bill.
因为有些人忘交电费了
No.

Our sun is a huge star which emits a tremendous amount of light.
太阳是一颗能发射大量光线的巨大恒星
However, like our sun.
然而 和我们的太阳一样
There are so many stars in the universe that counting them is almost impossible.
宇宙中有许多恒星 数不胜数
So, if there are so many stars, the space shouldn’t be black or dark, right?
所以如果恒星很多 太空就不是黑色了对吗
Absolutely.
当然
However, this is not the case.
然而 情况并非如此
According to a study, the space appears black because the universe is expanding.
研究表明 太空看起来是黑的 是因为宇宙在膨胀
This expansion is causing the visible light emitted by the stars to stretch out so much.
宇宙膨胀使得恒星发出的可见光要传播很远的距离
That when it reaches our eyes, they cannot detect it.
当它传播过来时 已经无法用肉眼察觉了
As our eyes cannot detect any visible light, the space appears black to us.
肉眼看不到可见光 太空看起来就是黑的
Moreover, light has a specific speed limit.
此外 光是有一定速度限制的
So, light from far far away stars has not even reached us.
所以 遥远恒星发出的光甚至没法传到我们这里
Thus, the space appears black.
因此 太空在我们看来是黑色的
How do snowflakes form?
雪花是怎样形成的?
My snowman makes them.
是雪人捏出来的
You wish.
你想得美呢
A snowflake begins to form when a supercooled water droplet in the sky,
当空中的一滴过冷却水滴
freezes onto a dust particle or pollen forming a tiny ice crystal.
在尘粒或花粉上变成微小冰晶 雪花就形成了
However, when water freezes.
然而 水结冰时
Its molecules arrange themselves in a hexagonal pattern.
水分子会自动排列成六边形图案
Thus giving the crystal a hexagonal shape.
使得冰晶具有六边形的形状
Now, as the ice crystal keeps falling, it comes in contact with more water.
现在 冰晶不断下坠 与更多水滴接触
As a result, the water starts freezing on the six corners of the ice crystal.
结果 小水滴开始在小冰晶的六个角结冰
Causing branches to grow on the corners and thus, giving us a beautiful snowflake.
六个角长出分支 形成了一片美丽的雪花
Also, as the atmospheric conditions are the same on all sides of the snowflake.
并且 由于雪花各边的大气状态是相同的
The branches grow identically, thus making the snowflake symmetrical.
各分支均匀生长 使雪花具有对称的形状
But since every snowflake follows a different path to the ground.
但是由于每一片雪花落地的路径不同
It encounters different atmospheric conditions.
就会遇到不同的大气条件
Hence, it is said that no two snowflakes are the same.
所以 人们常说世上没有两片相同的雪花
They all tend to be unique.
它们都是独一无二的

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奥萨小课堂的四个趣味科普知识

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视频来源

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