This was the time for the crew to test all the spacecraft systems.
这是给全体乘员对飞船系统作全面检查的规定时间。
And they were very important to the environmental control systems in the spacecraft.
并且他们对太空船的环境控制系统而言是相当重要的。
And they were very important to the environmental control systems in the spacecraft.
并且他们对太空船的环境控制系统而言是相当重要的。
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