Name: 【TED-Ed】我們的淡水從何而來 (Where we get our fresh water - Christiana Z. Peppard)
Uploaded: 2013-05-27T15:19:29.000Z
Duration: 3 min 47 s

At birth, our bodies are roughly 75% water.

出生時，我們的身體裡約有75％是水

情態副詞

We remain mostly water for the rest of our lives.

在我們這一生中，我們身體的水份也大多維持這個比例

程度副詞

We cannot survive even a week without fresh water.

我們無法在缺水一週的狀況下存活。

So, how much usable water is there on Earth?

所以，地球上到底有多少可利用的水呢？

地球上大部份的水存在於海洋，

That little sliver of liquid sustains human life on Earth,

這珍貴的液體使得人類可以在地球上存活，

2.5％雖然已經是很小的一部份了，

and even that is broken down into smaller parts:

但是還是可以在被劃分成更小的部份：

All the liquid water above ground is surface water

所有在地表上的液態水都是地表水

但這僅占所有水資源的一小部份。

0.3% of all fresh water is surface water.

but it accounts for little streams all over the planet.

不過這已包含地球上所有的溪流。

All rivers, including the Nile, the Jordan, and the Mississippi,

所有的河流，包含尼羅河、約旦河和密西西比河，

like Victoria, the Great Lakes, and Baikal.

像是維多利亞湖、五大湖和貝加爾湖。

freeze up to 70% of the planet's fresh water.

這佔了所有水資源中的很大部份，

but it isn't available for human use in a regular way.

但卻無法透過常規的方式供人類使用。

Finally, nearly 30% of all water on Earth is ground water.

最後，地球上將近30%的水是地下水。

As the name suggests, that's water in the ground.

就如同名字所示，這部份的水是存在地底下。

It can rest still and deep in huge caverns,

它可能是靜止地存在巨大洞穴的深處，

or it can snuggle in the little crevices of rock and pebble.

也可能是潛藏岩石裂隙和卵石的縫隙之間。

The upshot - thank goodness for ground water!

總歸一句話：感謝上天給我們地下水。

but it is much more plentiful than surface water.

Without ground water, our societies would be parched.

如果沒有地下水，我們的社會將會枯萎。

那我們又是如何運用水資源呢？

As a result of industrialization and population growth,

demand for fresh water skyrocketed in the last century.

自上世紀起我們對於淡水的需求暴增。

而這些水又被用在哪些地方呢？

Still, some general information can help us

And, what sectors consume the most fresh water?

以及，那些區域使用最多的淡水

Well, the United States consumes the most water

per capita of any country in the entire world,

也就是說超過世界上的任何國家，

and large industrializing nations like China.

和諸如中國等高度工業化的國家

But, this doesn't tell us what water is being used for.

但是這並不能告訴我們水被運用在那些方面。

If we ask what kinds of uses water is going towards,

Agriculture accounts for roughly 70% of global fresh water consumption.

農業用水大約佔全世界水資源消耗的70%。

Again, remember the numbers vary by region,

and the more water is required to produce our food.

導致我們需要將更多的水用在生產食物。

Furthermore, 22% of all fresh water worldwide

This includes the production of electricity,

and the manufacturing of all manner of goods,

- it's a drop in the bucket of overall water use.

這都包含在所有水份消耗的一部份。

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【TED-Ed】我們的淡水從何而來 (Where we get our fresh water - Christiana Z. Peppard)

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