The space agency is developing a new generation of rockets and crew capsules capable of reaching the moon which are due to fly within five years of the space shuttle fleet being retired next year.
美国宇航局正在研制能到达月球的新一代火箭和载人太空舱，计划在五年内搭载航天飞机进行发射，而目前的航天飞机将于明年退役。
Rockets can fly far out into space. Rockets have already taken men to the moon. One day they may be able to go anywhere in space.
火箭能够飞出地球进入太空。火箭已经载人到了月球。会有那么一天，它们也许能够进入太空的任何地方。
Rockets can fly far out into space. Rockets have already taken men to the moon. One day they may be able to go anywhere in space.
火箭能够飞出地球进入太空。火箭已经载人到了月球。会有那么一天，它们也许能够进入太空的任何地方。
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