不贰过

不貳過
bùèrguò
(literary) to not repeat the same mistake

CEDICT

literary

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 贰 èr
  1. two (banker's anti-fraud numeral)
  2. to betray
=3 过 guò
  1. to cross
  2. to go over
  3. to pass (time)
  4. to celebrate (a holiday)
  5. to live
  6. to get along
  7. excessively
  8. too-
=3 过 guo (experienced action marker)