名詞 slip up:

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

動詞 slip up:

1. make an error
   同義詞：stumble, trip up

1. He slipped up in his calculation and failed in the examination.
   他計算出了錯，這次考試未能及格。
2. I slip up and give you the wrong phone number.
   我粗心大意給錯了你電話號碼。