溫哥華老友記討論區 » 奇趣區 » Try This Experiment While Sitting at Your Desk

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金牌老友 (超級)

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發表於 2008-1-28 15:52 | 顯示全部帖子

Try This Experiment While Sitting at Your Desk

source: http://www.digg.com/educational/ ... itting_at_Your_Desk

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金牌老友 (超級)

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發表於 2008-2-3 10:14 | 顯示全部帖子

I realized that it has to be done At Your Desk because if you can see your leg, you can do it without much problem.