slip up

名词 slip up:

1. a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
   同义词：slip, slip-up, miscue, parapraxis

动词 slip up:

1. make an error
   同义词：stumble, trip up

1. 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。
2. I slip up and give you the wrong phone number.
   我粗心大意给错了你电话号码。