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这几个发明到不错，至少给大家添点笑料，总比我国擅长的填补某某空白的好，大部分劳命伤财加没用。
lester
(黑龙)
(#329372@0)
Last Updated: 2002-1-10
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看第一次的时候还以为是幽默 - 请看北京某研究所的三大发明！
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