We should call Earth " Water." It's 70 percent water by surface area.

我们其实应该称地球为“水星”。地球表面积的70%都是水。

Would we breathe underwater mean we could finally explore all of earth's waters?

能在水下呼吸是否意味着我们最终可以探索地球上所有的水域呢？

Rockstrom said the Earth's water went from being safe to being " out-of-bounds."

罗克斯特罗姆说，地球上的水从安全区变成了“越界区”。

These mismatched chemical signatures suggest that Earth's water could not have arrived on comets.

这样在化学上不相符的特徵表示 地球上的水不是彗星带来的结果地球上的水最有可能的来源是一种叫做。

The Fire couple followed the crowd of Earth, Water, and Air Elements into the immigration hall.

那对火族夫妇跟在一大群土族、水族、气族人身后，来到了移民大厅。

The landscape is decorated with multi-coloured flags which represent the five elements - fire, wood, earth, water and iron.

大地饰以五彩旗帜，代表五种元素，也就是火、木、土、水、金。

But that's only a tiny percentage of the Earth's water, nearly nothing when compared to the vast oceans.

但那只是地球上的一小部分水，根本无法和海洋相提并论。

It turns out that the most likely source for Earth's water is a type of meteorite called a carbonaceous chondrite.

结果地球上的水最有可能的来源是一种叫做" 碳质球粒陨石" 的陨石， 球粒陨石是一种陨石的类别名称。

Scientists at the National Oceanic and Atmospheric Administration (NOAA) say that the oceans hold about 97 percent of the Earth's water.

美国国家海洋和大气管理局的科学家表示，海洋约占地球水资源的97%。

For every million hydrogen atoms in Earth water, about 150 are heavy ones, while typical comet water has twice that many.

在地球上每一百万个水分子中，大约有150个是带有氘 而一般彗星上带有的水中有两倍的水分子是氘这样在化学上不相符的特徵表示 地球上的水不是彗星带来的。

And for every million hydrogen atoms in Earth water, about 150 are heavy ones, while typical comet water has twice that many.

而地球水中每百万个氢原子中，约有 150 个是重氢原子，而典型的彗星水的氢原子数是其两倍。

An eye-opening fact considering they cover more than 70 percent of the Earth's surface and contain about 97 percent of Earth's water.

考虑到海洋覆盖了地球表面的70%，包含了地球上97%的水，这是一个令人震惊的事实。

But we just poured all of Earth's water into the Sun, dooming ourselves to freeze.

但是我们只是把地球上所有的水都倒进了太阳，注定了我们自己会被冻死。

Then a period of glaciation Locked up lots of Earth's water, which dramatically lowered sea levels.

然后是一段冰川作用，锁住了地球上的大量水，这大大降低了海平面。

He was also dismayed to see that this unique crossroads of earth, water, and sky wasn't being protected or preserved.

他也很沮丧地看到这个独特的大地、水和天空的十字路口没有得到保护或保存。

The Japan Aerospace Exploration Agency (JAXA) published a research report in Nature Astronomy on Monday, suggesting that the Earth's water may have been brought by asteroids.

日本宇宙航空研究开发机构 JAXA 于周一在《自然•天文学》发表研究报告，认为地球上的水或许是由小行星带来。

" Mud" is basically dirty earth, water mixed with soil – mixed with what you would dig out of the ground.

“泥” 基本上是肮脏的泥土，水与泥土的混合——与你从地下挖出的东西混合在一起。

This great innovation by cyanobacteria was their ability to manufacture their own food, sugars, from the three most abundant elements on primitive Earth; water, carbon dioxide and sunlight.

蓝藻的这个伟大创新是他们能够从原始地球上最丰富的三种元素中制造自己的食物和糖，这三种元素即水、二氧化碳和阳光。

Instead, they believed that what we think of as empty space was filled with a mysterious substance, a fifth element beyond Earth, Water, Air, and Fire: the Aether.

相反，他们认为我们所认为的空白空间充满了一种神秘的物质，一种超越地球、水、空气和火的第五种元素：以太。

To understand that, you need to know the basic ingredients that create life on Earth — water, basic elements like carbon or nitrogen, and an energy source, like the sun.

要理解这一点，你需要知道在地球上创造生命的基本成分——水、碳或氮等基本元素，以及像太阳这样的能量来源。