严重的错误用英语怎么说？

严重的错误

例句

• Really, that was a terrible mistake. 说真的, 那是非常严重的错误。
• He made a gross mistake. 他犯了严重的错误。
• I made the fatal mistake of letting her talk. 我让她讲话是犯了严重的错误。
• They knew they had done something terribly wrong and lied to cover it up... 他们知道自己犯了十分严重的错误，于是撒谎隐瞒。
• The worst thing you can do is underestimate an opponent. 最严重的错误就是低估对手。
• Fortunately for me, my friend saw that something was seriously wrong. 对我来说幸运的是，我的朋友发现了非常严重的错误。
• It criticises the main contractor for seriously erring in its original estimates. 它批评主要承包商在其最初估价中犯了严重的错误。
• It had made some rather bad mistakes which I thought should be corrected... 它犯了一些相当严重的错误，我觉得应该加以纠正。
• Fortunately for me, my friend saw that something was seriously wrong... 对我来说幸运的是，我的朋友发现了非常严重的错误。
• It criticises the main contractor for seriously erring in its original estimates... 它批评主要承包商在其最初估价中犯了严重的错误。