What he did was took de Broglie motion of the electron as a wave and developed a wave equation for such matter waves.

他所做的就是,用电子的德布罗意运动,作为波并且对于那种物质波,给出波动方程。

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If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.

如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上

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