To resume one's former profession or skill; to take up an old trade again.
他虽然已经退休多年，但当公司面临技术难题时，他还是决定再当冯妇，亲自指导年轻工程师。
Although he had been retired for many years, when the company faced a technical challenge, he decided to resume his old profession and personally guide the young engineers.
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