这个习语通常指在经历了一次不愉快的体验、错误或失败之后，从中获得经验并确保以后不再重蹈覆辙。它强调的是通过“痛感”或挫折换来的深刻领悟。

• He lost all his money in a risky investment, but he definitely learned his lesson. ^{他在一次冒险投资中赔光了所有的钱，但他肯定吸取了教训。}
• After being caught cheating, she learned her lesson and never did it again. ^{在作弊被抓后，她吸取了教训，再也没有那样做过。}
• I hope you’ve learned your lesson about leaving your car unlocked. ^{我希望你已经吸取了不锁车门的教训。}