因为她个子矮，所以每次上了电梯，她的手够不到第九层的按钮，她只能够到第六层按钮，所以每次她只能到第六层，然后走到第九层。Because she is short, so every time the elevator, her hands can not reach ninth button, she can only to the sixth floor button, so every time she only to the sixthlayer, and then go to the ninth floor....
