"When you regain these core competencies and you start exercising your muscles, your skills do not atrophy," he said. "It's safer. And yes, you are buying down risk, because you're able to test things in low Earth orbit before you need to get to the moon, which is exactly what we did during the Apollo era."
After six agonising minutes, Jack Swigert's voice cut through the silence.
。关于这个话题，safew官方下载提供了深入分析
It does not aim to provide virtualization.
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