Astronautsonshortershuttlemissions(使命)oftenworkverylong...
問題詳情：Astronautsonshortershuttlemissions(使命)oftenworkverylongdays.Tasksarescheduledsotightlythatbreaktimesareoftenusedtofinishtheday’swork.ThistypeofscheduleisfartoodemandingforlongmissionsontheI...