He's trying to turn solar energy into liquid fuel.

他正在尝试一些惊人的研究，把太阳能变成液体燃料。

It says a blast did take place last week but that it involved liquid fuel.

政府表示，上周的确发生了爆炸，但与液体燃料有关。

Again, Admiral Carter: These liquid fuel systems are very, very dangerous; they're very unstable.

对此，海军中将卡特表示：这些液体燃料系统非常之危险，非常不稳定。

Long-range airplanes, for instance, are still going to need the energy density of a liquid fuel.

例如，远程型飞机仍将需极高密度的液体燃料。

Why not take steps now to reduce the carbon intensity of those liquid fuels? Cooper said.

为什么不现在采取措施来减少这些液体燃料的碳强度呢？库珀如是说道。

Pentagon consultant Norman Freedman says the Soviets have to be worried about liquid fueled missiles on other subs.

国防部咨询师诺曼·弗里德曼表示，苏联必须得担心其他用液体来为导弹提供动力的潜艇了。

The other alternatives are trickier, for now — zero-carbon liquid fuels can be double the price of gasoline or more.

目前，其他选择更棘手——零碳液体燃料的价格可能是汽油的两倍或更高。

Generally, a gas or liquid fuel is burned to produce thrust from the back of a spacecraft to propel it forward at high-speed.

一般来说，气体或液体燃料燃烧之后在航天器的后部产生推力，以高速推动它向前。

It's one of the hardest transportation problems to solve. Pound for pound, liquid fuel contains 16 times more energy than the best batteries.

航空是最难解决的交通问题之一。平均下来液体燃料所含的能量是最好的电池的16倍。

And what about the all-important, oil-derived liquid fuels?

那么最重要的石油衍生液体燃料呢？

Meanwhile, liquid fuels play a crucial role in almost all forms of transportation.

同时，液体燃料在几乎所有形式的运输中都发挥着至关重要的作用。

Farmers in the United States are concerned about a possible decrease in the use of ethanol. Ethanol is a liquid fuel made from plants, such as corn.

美国农民们担心乙醇使用可能会减少，乙醇是一种用玉米等作物制造的液体燃料。

But it’s harder to make a liquid fuel like ethanol, without getting a bunch of other byproducts.

但是，如果不得到一堆其他副产品，就很难制造像乙醇这样的液体燃料。

But for now, we'll focus on two of the most familiar in everyday life: electricity and liquid fuels.

但现在， 我们将重点关注日常生活中最熟悉的两种：电力和液体燃料。

North Korea says that they used a solid fuel engine as opposed to previous times when they used liquid fuel.

朝鲜表示，他们使用的是固体燃料发动机，而不是以前使用液体燃料的发动机。

Best of all, it can be fired with just about any liquid fuel, or you can even fire it using napalm!

最重要的是， 它几乎可以用任何液体燃料燃烧，或者你甚至可以用凝固汽油弹点燃它！

If you were to take that very expensive CO2 and convert it to a liquid fuel, that comes out to 50 dollars a gallon.

如果你把非常昂贵的二氧化碳转化为液体燃料，每加仑要花 50 美元。

While Pentagon Officials say they don't know what caused the missile tube explosion, they point out that Soviet missiles use highly volatile liquid fuel, and a fuel leak could have caused the eruption.

一些国防部官员表示他们不清楚导弹管爆炸的原因，同时也指出，苏联导弹使用了稳定性极弱的液体燃料，有可能是燃料泄露导致了这次爆炸。

That's why, very early in our missile programs as pushing a leading edge of technology, we moved to solid fuel missiles, early on just for that fact, because liquid fuel is extremely dangerous.

正因如此，我们在导弹项目之初本来是想采用这种尖端技术的，但最后还是转向了固态燃料导弹，就是因为担心爆炸，因为液体燃料十分危险。

Historically, most cars have run on gasoline, but that may change in the future: cars can also run on other liquid fuels and electricity.

从历史上看，大多数汽车都使用汽油运行，但未来可能会改变：汽车也可以使用其他液体燃料和电力运行。