That load weight is double the capacity of NASA space shuttles.
这样的载荷是美国宇航局航天飞机的运载能力的两倍。
NASA is also considering using it to replace the space shuttles.
美国宇航局也正在考虑用其代替航天飞机。
The facility's main mission, launching Space Shuttles, is about to end.
这个设施的主要任务，发射航天飞机，将要结束。
The space shuttles escape capsule will use a parachute in an emergency.
遇到紧急情况时，航天飞机的逃生舱会使用降落伞。
NASA space shuttles each have three fuel control valves one for each main engine.
美国宇航局航天飞机每一个有3个燃料控制阀，为每个主引擎之一。
The space agency is retiring its shuttles after thirty years.
航天局计划在三十年后让其航天飞机退役。
The space agency is retiring its shuttles after thirty years.
航天局计划在三十年后让其航天飞机退役。
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