?? ???????????????????
????:1????????????:??????
2????????
3???????????
4?????90?????
5?????98???
??????????????????????,????(NASA)?????????12????????17????,??3??????????,NASA???,??2??????(SpaceX)??????????
???????,NASA???2???,?????,?????????????????????????SpaceX?????????,???3???????????
???,?,NASA??SpaceX????????????,????????????????????????????????????
???????????,??????6??6????,?????????????????????????????????,???????????????????6??14??????????,????,?????????????????????????????8???,NASA????,????????2?????????(SpaceX)???????(????????? ???????????????)
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