Watson had made a serious error.

可以说，沃森犯了一个很严重的错误。

youdao

But this simple example has a serious error.

但是这个简单的例子有一个验证的错误。

youdao

It's not a serious error; we can let it pass.

这不是个严重的错误，算了吧。

youdao

It's thought that that is a serious error because it destroys trust in the currency.

这被认为是一个严重的错误,因为它会摧毁人们对货币的信任程度。

耶鲁公开课 - 金融市场课程节选

An urgent investigation is under way by the council which has admitted a "serious error of judgment".

BBC: Council knew of abuse teen's past

Instead he apparently decided to take matters into his own hands and, at best, made a serious error.

CNN: STORY HIGHLIGHTS

Former Israeli Foreign Minister Avigdor Lieberman called the decision to apologise a "serious error", Israeli news site Walla reported.

BBC: Israel PM apologies for Gaza flotilla deaths