The nature of the shuttle was, we couldn't put a crew escape system in it.
航天飞机的本质是，我们不能在里面放一个宇航员逃生系统。
-- Robert Crippen 罗伯特·克里彭
The nature of the shuttle was, we couldn't put a crew escape system in it.
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The nature of the shuttle was, we couldn't put a crew escape system in it.
航天飞机的本质是，我们不能在里面放一个宇航员逃生系统。
-- Robert Crippen 罗伯特·克里彭
