slip up

失误,出差错

例句与用法：

He slipped up in his calculation and failed in the examination.

他计算出了错，这次考试未能及格。

I slip up and give you the wrong phone number.

我粗心大意给错了你电话号码。

详细释义：

犯错误

We must have slipped up somewhere.

我们准是哪儿出了错。