the person in an organization who has the most important position with responsibility for the organization's commercial development (= activities and growth relating to marketing, sales, product development, and customer service)

He was previously chief commercial officer for a Belgium-based beer company. 之前他在一家位于比利时的啤酒公司担任商务总监。

The airline's Chief Commercial Officer said that Manchester airport was an important part of its growth plans. 该航空公司的商务总监说，曼切斯特机场是他们公司发展计划的重要一环。