Hub



GRE 蓝宝 TOEFL

解释

GRE 红宝书

• n. 轴心; 中心
• ［英］ n. 轴心 ( the center part of a wheel ) ; 中心 ( a center)
• ［类］ spoke : hub / radius : center ( 轮辐到轮轴距离相等 / 半径到圆心距离相等)
• ［例］ a hub of learning and culture ( 学术文化中心)

Webster Collegiate

noun

• Etymology: probably alteration of ［sup］2［/sup］hob
• Date: 1649
• 1. the central part of a circular object (as a wheel or propeller)
• 2.
  • a. a center of activity ; focal point
  • b. an airport or city through which an airline routes most of its traffic
  • c. a central device that connects multiple computers on a single network
• 3. a steel punch from which a working die for a coin or medal is made

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