Long-duration missions in space take a toll on the body, astronauts lose bone density and suffer muscle loss. Blood circulation is also affected, and fluid shifts can also impact eyesight.
上世纪90年代初,福建省领导科学研究会曾邀时任宁德地委书记习近平对青年领导干部谈谈如何干好工作的问题,一篇《从政杂谈》引经据典、发人深省——
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