| 单词 | hub |
| 释义 | hubhub /hʌb/ ●○○ noun [countable] 1the central and most important part of an area, system, etc., that all the other parts are connected to: hub of the commercial hub of the city2an airport which is a main base in a region through which many flights connect: Detroit is one of the airline’s hubs.3the central part of a wheel to which the axle is joined |
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