作为中苏两国关系重要内容的经贸关系,有顺利发展的时期,也曾出现过挫折。回顾与总结历史,有利于我们更好地去思考与把握未来。人们常说,历史是一面镜子,研究它可解惑,可益智。 Economic and trade relations as an important part of Sino-Soviet relations have witnessed a period of smooth development and setbacks. Review and summarize history, will help us to better think and grasp the future. People often say that history is a mirror and that it can be solved by studying it and it can be a puzzle.