Robert Zubrin, a rocket scientist, agrees and thinks starting with Mars makes the most sense.
火箭科学家罗伯特·祖布林同意并认为从火星开始最有意义。
A rocket can send a satellite into orbit.
火箭可以把卫星送入轨道。
The museum has a life-sized model of a rocket.
博物馆里有一个真实大小的火箭模型。
The little boy dreams of becoming a rocket scientist.
小男孩梦想成为火箭科学家。
Engineers are working on a rocket-propelled aircraft for space travel.
工程师们正在研发一种用于太空旅行的火箭推进的飞机。
When a rocket launches, the reaction force from the burning fuel propels it upward.
火箭发射时,燃料燃烧产生的反作用力推动火箭上升。
It gives instructions on making a rocket.
这篇文章的主要目的是给出关于制造火箭的说明。
The main purpose of the text is to give instructions on making a rocket.
文本的主要目的是告诉大家如何制作火箭。
Like sparks from a rocket.
就像火箭上散开的火花。
Titan: Are you in a rocket?
泰坦:你现在是在火箭里吗?

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