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人常说:活到老,学到老。宋丽梅凭着自己勤奋努力和永不满足的精神,一步一个脚印,从一名普通选煤工成长为新汶矿业
People often say: live old, learn old. Song Li Mei, with his hard work and never satisfied spirit, step by step, from an ordinary coal preparation workers to grow into Xinwen Mining