名词短语
中文翻译：轮轴
同义词：
['spoke', 'spokes', 'hub']
例句：
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1.The wheel is made up of a hub and several spokes.
这个轮子由一个毂和几根辐条组成。
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2. The car's engine is connected to the hub through a belt.
这辆车的发动机通过皮带连接到毂上。
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3. The bicycle has a hub at the center and several spokes extending outward.
自行车的中心有一个毂，几个辐条向外延伸。