to learn from an unpleasant experience so as not to repeat it
不快な経験から学び、それを繰り返さないようにする (fukai na keiken kara manabi, sore o kurikaesanai yō ni suru)
"After being late several times, he finally learned his lesson."
"何度も遅刻した後、彼はようやく教訓を学んだ。" (nandomo chikoku shita ato, kare wa yōyaku kyōkun o mananda)
to take a foolish risk that may bring bad luck
decisions made based on factual data rather than assumptions
to meet the required standard
a risky or uncertain situation where the outcome is doubtful
to reduce the amount or pressure of something
someone who is emotionally strong and unyielding
