[] () to work closely with sb and exchange information with them（与某人密切）联络，联系◆I have been liaising closely with the marketing department.我一直和营销部门有密切的联系。to act as a link between two or more people or groups做联系人；担当联络员◆His job is to liaise between the staff and management.他的工作是做员工和管理层之间的联系人。