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1. When I was still a little boy, I cherished many fancy dreams about space.
2. In fact, so little do we know about the universe that we are not even aware how it came into being.
3. I have long been interested in space exploration and I believe that I can learn a great deal from him about it.
1. 一些科学家宣称他们找到了外星人在太空存在的证据。
Some scientists claimed that they had found some evidence that aliens existed in space．
2. 中国成功把第一位宇航员送往太空的消息曾震惊整个世界。
The news that China had managed to send the first astronaut into space once shocked the whole world.
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