"The lesson from a lot of humanspaceflight work is the incredible degree of transparency that's required" in order to operate joint manned projects safely.
为了联合载人航天计划的安全，“来自大量人类航天工作的教训表明，令人难以置信的透明度是必须的”。
2
Now the agency will push openthe doors to commercial humanspaceflight...
现在有关机构将向商业载人航天敞开大门。。。
3
No other type of tasks could compare with the project of humanspaceflight engineering for after so many tests and experiments huge amount of work was still needed.