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Moving pictures from before World War Two showed a man named Buck Rogers landing on the planet Mars. He was a hero who could defeat any enemy from outer space.
二战前的一部电影展示了一位名为Buck Rogers的男子登陆火星。他是一位能够击败任何外太空来敌的英雄。
The rocket scientist is a different kind of hero. He or she makes space travel possible.
火箭科学家是另一种类型的英雄。他（她）们使太空旅行成为可能。
Rocket scientists, however, can have problems just like anyone else.
然而，火箭科学家也像其他人一样会遇到问题。
