NASA leaders said the shakeup is meant to address a larger underlying problem: the U.S. agency is flying its most powerful rocket too infrequently and repeating some of the same technical issues from one mission to the next.
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称之为“破坏性”其实一点都不过分，因为这篇论文表达的核心观点是：。关于这个话题，体育直播提供了深入分析