We've made a dreadful mistake...是什么意思？

We've made a dreadful mistake...

我们犯了个极大的错误。

ve

abbr. Venezuela 委内瑞拉；

例句
Conclusion The TCD abnormity of VE occurs mainly in intracervical artery system.
结论病毒性脑炎脑血流动力学异常改变以颈内动脉系统为主.

made

adj. …制的，（人工）做成的，拼成的，虚构的，保证成功的；v. 使(make的过去式和过去分词)；

例句
Single people are treated as an aberration and made to pay a supplement.
独身者被当成异类，而且要付一笔额外的费用。

dreadful

adj. 可怕的，令人畏惧的，讨厌的，糟透了的，丑陋的，糟糕的；n. <英>惊险小说[杂志]；

例句
They told us the dreadful news...
他们告诉了我们那糟糕透顶的消息。

mistake

n. 错误，过失，误解，差错，口误，笔误，失策，失误；vt.& vi. 弄错，误解；vt. 认不出，误会，看错；vi. 弄错，误解；

例句
Her mistake was to blab about their affair...
她错在说出了他们的婚外情。