Try Lego Mindstorm. It is very cool for boys. You can find a Fir

来源: Craterlake 于 2015-01-06 09:05:14 [档案] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: Besides all suggestions above, I think there is one more thing t 由 1st37 于 2015-01-06 07:54:27

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