周先生是我的同窗好友,前几年从事过猪小肠提取肝素钠、动物血提取 SOD,但不是上当受骗,就是缺乏技术和设备,以失败告终。去年四月份,在闲谈中,他向我诉说了这几年来创业历程的艰辛与 Mr. Zhou was a friend of my classmates. He had been involved in extracting heparin sodium from pig intestines and animal blood extracting SOD in previous years. However, he was not deceived or lacked technology and equipment and ended in failure. In April of last year, during the chat, he told me the hardships of the course of entrepreneurship over the past few years.