No one can alter the fact, ex post facto.

没有人能在事后改变事实本身。

The ex post perspective is backward looking.

“事后” 的视角乃是向后看的。

The next point is speculative price bubble and ex post rational stock price.

下一个点是投机价格泡沫和前后合理的股票价格。

There are a number of possible explanations for these very high ex post returns.

对于如此高额的事后估计收益有种种解释。

On the one hand, LOLR is productive ex post as it can avoid inefficient liquidation.

一方面，LOLR是事后有效率的，因为它避免了无效率的清算。