引以为戒 take as a warning
Explanation
把以前犯过的错误或别人犯过的错误作为教训，引以为戒，避免以后再犯同样的错误。
To take past mistakes or the mistakes of others as a lesson and use them as a warning to avoid making similar mistakes in the future.
Origin Story
话说唐朝时期，有个叫李白的诗人，他年轻的时候非常狂妄，喜欢喝酒，常常得罪人，结果被贬官。后来，他意识到自己的错误，开始反省，并写下了很多感人肺腑的诗篇。他把自己的经历写成诗歌，告诫后人要引以为戒，做人做事都要谦虚谨慎。年老的时候，他感慨万千地说：“我年轻时，恃才傲物，狂放不羁，如今想来，真是后悔莫及。希望后世子孙引以为戒，千万不要重蹈覆辙！”他的一生可谓跌宕起伏，充满了传奇色彩，但最终他却以诗歌留名千古，成为了一代文豪。
Once upon a time, there was a talented but reckless young painter. His early works were brilliant but lacked the refinement that comes with patience and practice. He often rushed through his paintings, focusing only on the initial inspiration. Later in life, after many years of hardship and artistic struggles, he finally mastered his craft. Reflecting on his journey, he cautioned younger artists to learn from his early mistakes and the importance of perseverance and detail in their work. He said that his early paintings, although impressive, showed a lack of discipline that he only later overcame.
Usage
用于劝诫别人吸取教训，避免重蹈覆辙。
Used to advise others to learn from their mistakes and avoid repeating them.
Examples
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前车之覆，后车之鉴，我们要引以为戒，避免重蹈覆辙。
qianchezhifu, houchezhijien, womenyaoyinyiweijie, bimianzhongdaofuche.
We should take the lessons from others' failures as a warning to avoid repeating the same mistakes.
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这次的失败，我们要引以为戒，下次争取做得更好。
zheyicide shibai, womenyaoyinyiweijie, xiaci zhengqu zuode genghao
We must learn from this failure and strive to do better next time.