September21,2050-Atapressconferencetodayitwasannouncedt...
问题详情:September21,2050-AtapressconferencetodayitwasannouncedthatthefirsttouristheadingforMarswillbethe38一year—oldUSbusinessmanPatrickClifford.HewillleavetheearthinthelaunchingwindowofJune2052andse...