along coastal region border region
Arid region and semiarid region
Bachu Region of Xin jiang Autonomous Region
Electric power transmission from western region to eastern region
gas conduction from western region to eastern region
infra-black region (blacker than black region)
afferent branchial artery
afferent branchial vein
afferent branchial vessel
bilateral branchial cleft fistula
birth injury of branchial plexus