How can you throw a ball as hard as you can and have it come back to you,even if it doesn't hit anything,there is nothing attached to it,and no one else catches or throws it?
问题描述：
How can you throw a ball as hard as you can and have it come back to you,even if it doesn't hit anything,there is nothing attached to it,and no one else catches or throws it?
答
你怎么能把一个球尽可能努力并让它回到你,即使它不打任何东西,没有附加到它,并没有人在意或扔吗?