小轮子（上海叫小轮盘）脚踏车，1973年上海就有了， 20吋，自行车原先有28吋和26吋

来源: 华府采菊人于 2026-02-10 12:05:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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