What can go up and come down without moving?

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Whatcangoupandcomedownwithoutmoving?Whatcangoupandcomedownwithoutmoving?Whatcangoupandcomedownwithou

What can go up and come down without moving?
What can go up and come down without moving?

What can go up and come down without moving?
汉字卡

什么可以不用移动就能上升或下降

什么可以上升下降却没有移动？