那个过错使我们前功尽弃.

That mistake has undone all our good work.

对自己的过错心怀感激吧。

Be thankful for your mistakes.

他抄收电报从来没有出过错.

He has never made any mistakes in recording telegraphs.

尽管会为了一些理由犯下过错.

You make mistakes bur for a reason.

以前的过错，源自你自己的不足。

All those mistakes in the past came because of our incompetence .