Cause＂Ｋ＂is back and he hyped...

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明早7:15火车,上海

在宁波的暑假业已结束

要说什么是最后悔的,

就是这次回家的天数.恩.

fine,now on the new way.

because as we know, there are known knowns.

There are things we know we know.

We also know there are known unknowns.

That is to say,

we know there are some things we do not know,

but there are also unknow unknowns.

The ones we don't know we don't know.