September21,2050—Atapressconferencetodayitwasannouncedt...
问题详情:September21,2050—AtapressconferencetodayitwasannouncedthatthefirsttouristheadingforMarswillbethe38-year-oldUSbusinessmanPatrickClifford.HewillleavetheearthinthelaunchingwindowofJune2052andset...