The whole oceans are formed from liquid hydrogen.

整个海洋是由液态氢构成的。

The piece behind me is the liquid hydrogen tank.

我身后的那块是液氢贮箱。

NASA Space Launch System is using liquid hydrogen and liquid oxygen.

美国航天局太空发射系统使用液态氢和液态氧。

And then you have the core stage, the liquid hydrogen and the liquid oxygen.

然后是核心部分，液态氢和液态氧。

But then you also have a liquid propellant in the form of liquid hydrogen and liquid oxygen.

我们还有液体推进剂，就是液态氢和液态氧。

Instead of a mantle, like terrestrial planets, Jupiter has a huge region made up of liquid metallic hydrogen.

不想类地行星有地幔，木星有一大块区域由液态等离子氢构成。

And that's where we run a full duration test, with liquid hydrogen and liquid oxygen.

这是我们用液态氢和液态氧进行持续测试的地方。

NASA historian Brian Odom explains that the liquid hydrogen tank is just one piece of the larger SLS system.

美国宇航局历史学家布莱恩·奥多姆解释称，液氢罐只是大型SLS系统的一部分。

Now, very, very cold liquid, normally known as cryogenic, - 423 degrees Fahrenheit for liquid hydrogen and -297 degrees for liquid oxygen.

是非常非常冷的液体，通常被称为低温，液态氢 是 -423 华氏度，液态氧是 -297 华氏度。

This pure liquid hydrogen is a highly artificial substance. It's technologically very difficult to produce and store liquid hydrogen.

这种纯液态氢是一种高度人造的物质。生产和储存液态氢在技术上非常困难。

A liquid hydrogen has lots of challenges just on the engineering and technological aspects.

液态氢仅在工程和技术方面就有很多挑战。

For me personally, I don't see the world moving vast, vast amounts of liquid hydrogen around.

就我个人而言，我看不到世界上移动着大量的液态氢。

The idea is to build orbiting gas stations that harness the sun's power, to split water into liquid oxygen and liquid hydrogen that would then be used for rocket fuel.

这个想法是建立利用太阳能的轨道加油站，将水分解成液氧和液氢， 然后将它们用作火箭燃料。

And with it’s super-strong bonds, solid metallic hydrogen would also be a great way to store energy, which would make it a better rocket fuel than the fuels we use now, like liquid hydrogen and oxygen.

凭借其超强的键合力，固态金属氢也将成为储存能量的好方法， 这将使其成为比我们现在使用的燃料（如液态氢和液态氧）更好的火箭燃料。