A water rocket automatically opening the parachute, including a rocket head, a storage bin, a power bin, a tail wing, a parachute, a tether 1, and a tether 2.

一种能自动打开降落伞的水火箭，包括火箭头、贮藏仓、动力仓、尾翼、降落伞、系绳 1、系绳2。

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Researchers have tossed around theoretical calculations of using just aluminum and water for rocket propellant in the past.

研究者在过去辗转不安的进行理论计算，仅仅只用铝和水作为火箭燃料。

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The asteroid would need to posses water so that colonists could extract oxygen and hydrogen for rocket fuel.

这颗小行星将需要具备水使殖民者可以提取氢和氧的火箭燃料。

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Water is rocket fuel.

BBC: What if you could mine the Moon?

Oxygen could be derived from ilmanite reserves there and water could be extracted to make rocket fuel or sustain life on a base.

CNN: Mining the moon for a nuclear future

The oxygen that remains is burned with fuel and water in a chamber modeled after a rocket engine.

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