副首长 meaning in Chinese

veep
vicepresiden

The department is headed by the director - general of civil aviation , whose deputy is the deputy director - general of civil aviation
民航处首长为民航处处长，副首长为民航处副处长。
Senior foreign officials such as administrative heads or deputy heads of international intergovernmental organizations dispatched to the roc and their dependants
四政府间国际组织之外国籍行政首长、副首长等高级职员因公来我国者及其眷属。