chain operation短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 链接操作 This paper introduces the origins and development of the chain/span> operation, and probes into how the chain operation to lead the circulation modernization of our country. 介绍了连锁经营的起源与发展，对连锁经营如何引领我国的流通现代化进行了探讨。 dictall