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单词 training wheel
释义

training wheel

美 
英 
  • 网络辅助轮;匡助轮;练习辅助轮
复数:training wheels  
n.
1.
one of a pair of two small wheels attached to the back of a bicycle to help a child who is learning how to ride keep their balance

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更新时间:2026/2/24 3:31:20