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如果氧气量增加两倍会怎样? – 译学馆
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如果氧气量增加两倍会怎样?

What If Oxygen Doubled in Earth’s Atmosphere?

如果地球的氧气量增加两倍会怎么样?
深呼吸一下
Take a deep breath.
我们每天呼吸23000次
We take 23,000 breaths a day;
将氧气传输给大脑和细胞
trying to get oxygen to our brain and cells.
氧气是我们的生存要素
Oxygen is essential to our survival.
但它在我们呼吸的空气中仅占很小一部分
But it’s a only small percentage of what’s in the air we breathe.
如果空气中有更多氧气呢?
So what if there was more of it?
它会造成巨型昆虫满街游荡吗?
所有东西都会着火吗?
会把你变成超人吗?
这只是当
These are just a few
氧气含量变成今天的两倍时
of the things we’d be dealing with if the Earth’s
我们要面对的几件事而已
atmosphere had double theamount of oxygen it has today.
还会发生什么呢?
What else would happen?
这里是《自然无常》
this is What If,
本期节目将介绍 当空气中含有两倍氧气时 会发生什么
and here’s what would happen if Earth’s atmosphere had double the amount of oxygen.
我们的大气中约含20%的氧气和78%的氮气
Our atmosphere contains about 20%oxygen and roughly 78% nitrogen.
虽然氧气不是空气中占比最多的气体
Even though it’s not the most significant part of our atmosphere,
但它却最重要
it is the most important.
我们体内90%的能量来自氧气
90 % of our energy comes from oxygen,
剩下的10%来自食物和水
with the rest being from food and water.
没有了氧气 你将看不了这个视频
You wouldn’t be able to watch this video without oxygen,
你将做不了任何事情
you wouldn’t be able to do anything.
因为你将不复存在
That’s because you wouldn’t be alive. And,
并且 氧气不仅只对人类很重要
not only is oxygen essential for humans,
它对地球上所有生物都很重要
it’s vital to all life on Earth. Now,
现在 如果空气中
what would happen
有两倍的氧气 会发生什么呢?
if the Earth had double the amount of this crucial element?
你最先注意到的应该是这些巨型虫子
The first thing you’d notice wouldprobably be those giant bugs.
昆虫通过叫做“气管”的细小管道呼吸
Insects breathe throughtiny tubes called trachea.
科学家们已经推理出
Scientists have theorized
如果更多的氧气进入气管
that if more oxygen were to enter these tubes,
像蜘蛛和蟑螂这类昆虫将变的更大
insects like spiders and cockroacheswould grow much larger.
在约30亿年前的史前时期
About 300 million years ago,during prehistoric times,
地球的大气中含有30%的氧气 在那段时间
Earth’s atmosphere was 30%oxygen. During that time,
昆虫的体型十分庞大
insects weremuch, much larger.
蜻蜓的体型和鹰一样大
Dragonflies were the size of hawks,
有些蜘蛛的体型堪比鸟类
while some spiders were the size of small birds.
地球上有两倍的氧气 也就是
Doubling the Earth’soxygen levels would mean having
大气中的氧气比史前时期还多
even more oxygen inour atmosphere than back then.
现在的昆虫将长的比史前时期更大
Our insects would be even more enormous.
虽然这些巨型虫可能会吓掉你的裤子
Although these giant insectsmight scare the pants off of you,
但你大可放心 更多的能量使你跑的比它们快
you can feel better knowing that you’d have much more energy to outrun them.
随着氧气含量增高 你会发现自己有更多能量
With a higher oxygen level, you’d notice you that have much more energy.
当所有人都得到更多的氧气后
The human endurance recordsof today would quickly
现在人类的忍耐力极限将很快被打破
be shattered after everyonegets more oxygen in them.
你也会变得更机敏
You’d also be more alert.
更多的氧气推动了血液循环 提高体内的能量
More oxygen in your body, improves your circulation and increases your energy.
人类将更少生病
Humanity would see much less disease,
你也将更少感冒
and you’d caught in sick a lot less. Or,
但 真的吗?
would you?
一种叫做中性粒白细胞的抗感染免疫细胞
A type of infection-fighting immune cells known
会更频繁地出现
as neutrophils would occur more often,
保持你的身体健康 你将更少感冒
keeping you healthier.You’d get a lot fewer colds!
你会像一个超人一样!
You’d be like Superman! Well,
但是
not quite.
体内获得更多的氧气
The increased amount ofoxygen your body is getting could also
会带来一些严重的长期健康问题
lead to some seriouslong-term health problems.
随着氧气增多
With the increased levels of oxygen,
人类氧中毒的可能性也在增高
humans would have an increased chance of oxygen toxicity.
氧中毒发生在人类突然接触到
This happens when humans are exposed to higher oxygen levels
过量氧气情况下
than their bodies are normally used to.
假以时日 氧中毒将造成肺损伤
Over time, this could lead to lung damage,
视力下降 细胞繁殖能力丧失
poor eyesight and cells not being able to reproduce.
身体里过多的氧气会产生自由基
Having too much oxygen inyour body creates free radicals.
这些原子会寻找别的电子进行配对
These atoms look for otherelectrons to pair up with.
这种现象将对你的身体和DNA造成损伤
When this happens it can cause damage to your body and your DNA.
对了 我们之前提到过的超级大火呢?
Oh yeah, and what aboutthose crazy fires we mentioned? Well,
当大气中含有的氧气增多
with more oxygen in the atmosphere
物体将更容易燃烧
things would catch on fire more easily.
总的来说 如果空气中缺乏氧气
Generally speaking, when you can’t start a
你就没办法点燃东西
fire it’s due to the lack of oxygen.
可以想到 当空气中有了更多的氧气
With there being even more O2 the atmosphere think
一切物品都会变得十分易燃
of how easy everything would catch fire.
觉得加利福尼亚的森林大火很糟糕?
Think California forest fires are bad?
这世界上除了森林会发生大火
Expect those to happen all around the world.
湿润的植物同样也有机会燃烧起来
Even wet vegetation wouldhave a chance at burning.
至于整个地球?
And as for the planet as a whole?
首先 地球的质量将增加
Well for one, we’d have a lot more mass.
氧气不止存在于大气层
Oxygen isn’t just in our atmosphere.
它也是地壳的重要组成部分
It also plays a large part in the Earth’s crust.
氧气增多会使地壳变得更重
And with more oxygenthe crust would be heavier,
使岩石圈比大气圈更重
making the lithosphereheavier than our atmosphere.
这将造成物体的氧化 包括大量水体
This would cause things to oxidize,including large bodies of water,
它们将变成过氧化氢
turning into hydrogen peroxide. So,
所以 氧气增多有利有弊
some good and some bad comes with this,
但幸好 你可以舒口气
but luckily you can take a sigh of relief knowing
毕竟现在大气层中只有20%的氧气
that our atmosphere only has 20 % oxygen.
并且目前这些氧气足够我们使用
And so far it’s worked out pretty well for us.
但想象一下 如果没有氧气呢?
But imagine if we had no oxygen?
这听上去像是《自然无常》的另一个故事
That sounds like a storyfor another, WHAT IF.

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视频概述

氧气是人类生存的必需品,我们自然不希望它变少,但如果氧气变多了,又会怎样呢?

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视频来源

https://www.youtube.com/watch?v=5Q3ft8OsFaM

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