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STEAM DIY - 橡皮筋吉他
STEAM DIY - 牛頓擺
牛頓擺/擺
STEAM DIY - 走鋼索的小丑
STEAM DIY - 風力發電
平衡鳥
STEAM DIY - Connector
STEAM DIY - Pulley Dynamometer
STEAM DIY - Ancient castle drawbridge pulley
