太空失重状态下，宇航员容易便秘，即使拉得出，稍不注意粪便又会乱飞，“太空如厕”是困扰各航天大国的难题。在第七届中国航展上，民间发明家金徐凯携其设计的“太空马桶”亮相，顿时引起国内外关注。
工程师预计这款新一代的太空马桶将在五年内投入使用。
Engineers hope to have this next-generation space toilet available to use in space within the next five years.
家里的马桶堵了就够闹心的了，如果太空上的厕所坏了那会更糟糕，尤其在还要来客人的时候。
Its bad enough when the toilet gets clogged at home; it could be a lot more serious in space, especially with visitors on the way.
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