科普diy 小學高級系列 齒輪換擋車 (附繁體字說明書)
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科普DIY 小學高級系列齒輪換擋車(附繁體字說明書) 單價: 70元尺寸（mm）:106*147*45 2A電池*2 以齒輪換擋小車為載體，幫助 ...
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