It's the one thing you can't get back.

这是你无法的东西。

One solution would be to force universities to take on some of the risk that loans will not be repaid.

个解决办法是迫使大学承贷款无法的风险。

617. It seems some of the spoilers cannot be retracted.

617. 看来有剧透是无法的。

But loss must be the necessary consequence of improving land for the sake of a produce of which the price could never bring back the expense.

但是损失定是为了生产价格永远无法成本的产品而改良土地的必然结果。

It refers to money that you can't get back, you've already spent it, and you feel that because you've spent that money you should spend even more money on the same bad idea.

它指的是你无法的钱， 你已经花掉了，你觉得因为你已经花掉了那笔钱， 所以你应该在同个坏主意上花更多的钱。