Lat Saturday I attended a lecture on pace flight. I am glad that I have learned a lot about pace. Now I know omething about the tructure of a pace rocket and undertand the importance of pace flight to mankind. I become intereted in pace.
Yeterday I borrowed everal book on pace from the chool library.I want to be a pace cientit in the future.
注释:
1) attend a lecture on pace flight聆听航天飞行讲座
2) the tructure of a pace rocket航天火箭的结构
3) the importance of pace flight to mankind航天飞行对人类的重要性