space flight

基本解释

Despite the warm words of the nation’s leaders, America’s manned space-flight programme has been becalmed in Earth orbit for decades.
尽管总统的讲话热情洋溢，但是，数十年来，美国载人航天飞行项目一直停留在对于地球轨道的研究上。
In this paper the theoretic foundations and progresses on space-flight breeding were summarized, the problems and application perspective of space-flight breeding were also discussed in rice breeding.
本文综述了水稻航天育种的特点、理论依据及研究进展，讨论了水稻航天育种存在的问题和应用前景。
The great success of ShenZhou 5 space-flight added more confidence to the talents of Chinese aerospace researchers and working staff to explore space.
神州五号的巨大成功使中国航天人对自己探索太空的能力更有信心。

And NASA is also being called on to develop new technologies to solve problems involved in long-term space flight for humans and robots.
The X-15 was the first major investment by the United States in manned space flight technology.
And in nineteen ninety-eight, at age seventy-seven, he returned to space in an historic flight.

Indeed, political upheavals saw space-flight ambitions revived, then cancelled, twice during the 1970s.
ECONOMIST: China in space