plural hubs
plural hubs
Learner's definition of HUB
[count]
1
: the central and most active part or place中心;核心 2
: the airport or the city through which an airline sends most of its flights枢纽机场;枢纽城市 3
: the center of a wheel, propeller, fan, etc.(轮)毂;(推进器、风扇等的)旋翼叶毂