[KongchangAI]
Unverified80% confidenceSolutionTime unknown

分年龄进阶方案:1.5-3岁用滑步平衡车→3-5岁转12/14寸自行车(可先无辅助轮尝试)→5岁以上选16/18寸→8岁以上选20寸(可带变速),每个阶段以身高换车

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80%
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Long-term
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