痛ㄊㄨㄥˋ定ㄉㄧㄥˋ思ㄙ痛ㄊㄨㄥˋtòngdìng‑sītòng

  1. 創痛平復或悲痛的心情平靜之後，回味當時所遭受的痛苦。例 「痛定思痛，當汲取這一慘痛的教訓」。

英to think of the pain when the pain is gone (idiom)​, to ponder about a painful experience