co-chairsCOCA⁶⁷⁷⁷⁴BNC⁷¹¹⁴¹Economist⁵³⁵⁸¹⁺¹ 基本例句 n.共同主席；联合组长原型co-chair的三单 Each working group consists of hundreds of authors under the leadership of two or sometimes more co-chairs, one from a developed country, one from a developing country. 每一个工作组由几百个作者组成，他们有两个领导有时会更多，一个来自发达国家，一个来自发展中国家。51ielts