數理情色
甚麼是『數理情色』?這是個以輕鬆手法討論科學知識的blog,當然也是吸引人來看我的blog的綽頭名稱!
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Wednesday, July 14, 2010
港大雙蝶
RIMG5112
Originally uploaded by
a9000068
藍蝶追着銀蝶, 是同種的嗎?
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