change-over point的意思|示意

There's no point in worrying over things you can't change.

对改变不了的事情担心也没用。

The debate over this final point caused the Rank board to change their calls more frequently than a bingo announcer...

关于这最后一点的争论，引起股东会接二连三地更改他们的对外通告。

People change over thime so it's not surprising that many boys& girls find themselves facing their best friends break up at some point in their middle school years.

随着时光的流逝，人人都会改变，许多男女生在中学阶段会与他们的好朋友分道扬镳，这是丝毫不足为奇的。

I have yet to meet anyone who can go back in time and change the past, so what's the point of churning it over in our mind again and again?

我仍未能满足任何人在回去的时候，改变以往所以什么意思被架空而后在头脑再拖？