Plans call for the construction of a new crew capsule called Orion to replace the space shuttle in 2015, plus two rockets and a lunar lander.
计划需要在2015年建设一艘名为“猎户星”号的新太空船来取代现在的航天飞机，加上两枚火箭和一辆月球登陆车。
Two rockets homed in on it from behind without a sound.
两枚火箭无声地从后面向目标射去。
Two rockets homed in on it from behind without a sound.
两枚火箭无声地从后面向目标射去。
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