The induction starts at the sinks, which are P-positions because they vacuously satisfy the P-position requirement.

这个归纳从汇点开始，汇点是P -状态因为它显然满足P -状态的要求。

I still remembered when I finished the reading I was moved deeply by the plot of the novel and sat there vacuously.

还记得当我读完之后，我呆坐在那里，被故事情节深深的感动。