Mr Lemmens said that future spacecraft "should be designed in such a way that they can take themselves out of orbit safely, preferably by doing controlled re-entries".
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晚上11点多，他才回来。一进门，他就笑嘻嘻地说今天很开心。他说大家都见到了，几个兄弟轮着敬酒。有人说“这么多年第一次凑齐”，有人说“以后多走动”。。关于这个话题，同城约会提供了深入分析