我为我们会犯不可原谅的错误而担忧。

I fear lest we commit an inexcusable blunder.

youdao

两次犯同样的错误是不可原谅的。

To have made the same mistake twice was.

youdao

两次犯同样的错误是不可原谅的。

To have made the same mistake twice was unforgivable.

youdao

两次犯同样的错误是不可原谅的。

To have made the same mistake twice was unforgivable.

youdao