【医】 aortic area
【医】 aort-; aorta; aortae; arteriae aorta; hemal axis
petal; piston
【医】 flap; valva; valve; valvula; valvulae; valvule
area; borough; classify; distinguish; district; region; section
【计】 region
【医】 area; belt; field; quarter; regio; region; zona; zone