In a chemistry sense, liquid methane acts like the simplest possible oil.

在化学意义上，液态甲烷和最简单的石油性质一样。

But Titan's seas and lakes are filled with liquid methane rather than water.

但是土卫六上的海洋和湖泊充满了液态甲烷而不是水。

Or perhaps simply a vast global ocean of liquid methane?

或者也许只是一个广阔的全球液态甲烷海洋？

Okay, back to you being underwater or, under liquid methane.

好吧， 回到你在水下或液态甲烷下。

It has lakes and seas of liquid methane and ethane, instead of water.

它有液态甲烷和乙烷的湖泊和海洋，而不是水。

The density of liquid methane is much, much lower than water so you wouldn't be as buoyant.

液态甲烷的密度比水低得多，所以你不会那么浮力。

And at Titan, there are also exotic lakes and seas of liquid methane and ethane on the surface.

在土卫六上，地表也有奇异的液态甲烷和乙烷湖泊和海洋。

These have since been confirmed to be lakes of liquid methane — the first time any liquid has been seen on the surface of another world.

这些被确认为液态甲烷湖——这是人们第一次在其它行星表面发现有液态物质。

In a study published this year in the journal Science Advances, researchers used a DAC to combine water and liquid methane, or one carbon bonded to four hydrogens.

在今年《科学进展》发表的一项研究中，科学家用DAC将水与液态甲烷或四氢化碳溶合。

The reason you'd have such a hard time keeping your head above the surface is due to the liquid methane and ethane found in Titan's lakes.

你很难将头保持在水面之上的原因是泰坦湖中发现了液态甲烷和乙烷。

Saturn's largest moon, Titan, is the only other place in our solar system that has lakes on its surface, but these lakes aren't water, they're liquid methane.

土星最大的卫星土卫六是我们太阳系中唯一一个表面有湖泊的地方，但这些湖泊不是水，而是液态甲烷。