1 N-COUNT (活动的)中心,核心 You can describe a place as a hub of an activity when it is a very important centre for that activity. (活动的)中心,核心 [Also + of]
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The island's social hub is the Cafe Sport.
该岛的社交中心是“体育咖啡馆”。
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As a hub of finance and communications, Paris is now almost equal to London.
作为一个金融和交通中心,巴黎现在几乎可媲美伦敦。
SYN centre, heart, focus, core
2 N-COUNT (轮)毂 The hub of a wheel is the part at the centre. (轮)毂
3 N-COUNT 航空枢纽;中心机场 A hub or a hub airport is a large airport from which you can travel to many other airports. 航空枢纽;中心机场
4 (网络)集线器 A hub is a device for connecting computers in a network. (网络)集线器
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