liftup

liftupliftup
  1. Only a fraction of a rocket 's energy is used to liftup out of the atmosphere ; the vast majority of it is used to gain orbital ( sideways ) speed .

    火箭的能量只有很少一部分用来将负载带到大气层外,大部分的能量都被用于加速到轨道上侧着走的速度。