孙振耀，一个大人物，年轻时做过很多有意义的事。这是他退休时畅谈人生的一篇文章，很有教育意义，希望对大家有所帮助！-Sun Zheng Yao, a big man, when he is young,has done a lot of productive things. This is a article in which he talks about life in his retirement, very educational.I hope it is helpful to us!