For Abdalati, the ability to observe Earth from space is fundamental to U.S. interests.
对于Abdalati来说，能够从空间观测地球的能力是美国的根本利益。
A more fundamental objection is that manned space flight is a waste of time.
更为坚决的反对在于载人航天飞行本就是浪费时间。
The second part is the fundamental theory of space superficies.
第二部分是空间地上权的基础理论。
The second part is the fundamental theory of space superficies.
第二部分是空间地上权的基础理论。
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