中国航天史
中国航天史-
嫦娥五号是中国航天史上最复杂、最具挑战性的任务之一。
Chang'e-5 is one of the most complicated and challenging missions in China 's aerospace history .
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中国完成了中国航天史上第一次太空行走。
Chinese astronaut has become the first in his country 's history to take a space walk .
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“神舟一号”无人试验飞船是中国载人航天工程的首次飞行，标志着中国在载人航天飞行技术上有了重大突破，是中国航天史上的重要里程碑。
Shenzhou I experimental spaceship is the important milestone in China 's spaceflight history .