虽然莎拉的离开在外界看来颇为突然，但据多名现任及前任员工表示，这一结果并不令人意外。他们称从去年开始就已经看到不祥征兆，尤其是她的直接下属频繁更换。
expensive as well, and still, in general, an unproven technology. Besides, the
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"Building even a modest lunar habitat to accommodate a small crew would demand megawatt-scale power generation. Solar arrays and batteries alone cannot reliably meet those demands," suggests Dr Sungwoo Lim, senior lecturer in space applications, exploration and instrumentation at the university of Surrey
ExtrudeGeometry（挤压几何体）：