但是有一种多样性且很丰富的光合作用生物，统称为藻类，它们可以被诱导生产类橄榄油，一种可以让喷气式飞机正常飞行的燃料。

But there's a diverse and abundant population of photosynthetic organisms, collectively called the algae, that can be induced to make the likes of olive oil, oil that can fly jet airplanes just fine.

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液化推进火箭通过燃烧产生喷气的材料是液体；这种液体有点像汽油、煤油或酒精一类燃料。

The material which the liquid-propellant rockets burn to make the jet gases is liquid. This is something like gasoline, or kerosene, or alcohol that can brun.

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