Thisyearmarks45yearssinceNeilArmstrongbecamethefirstper...
问题详情：Thisyearmarks45yearssinceNeilArmstrongbecamethefirstpersontowalkonthemoon,taking“onesmallstepformanandonegiantleapformankind.”Overall,12Americanastronautshavewalkedonthelunarlandscape,thelas...