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hub /ˈhʌb/ n

中文：轮毂

中文 · 轮毂Español · concentradorFrançais · concentrateurDeutsch · Nabe
Meaning：Central part of a wheel from which spokes radiate
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Found in these illustrated scenes（9）

Wheelchair Wide area network Star network Horizontal-axis wind turbine Office supplies: tape dispenser Spider web Bicycle parts Structure of a clutch disc Water turbine runner

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