ㄇㄤˊㄓㄨㄥㄧㄡˇㄘㄨㄛˋmángzhōng‑yǒucuò

忙中有错
  1. 匆忙做事難免出錯 公務繁雜難免忙中有錯」。

Rushed work lead to errors (idiom)​. Mistakes are likely at times of stress.