Ｄｅｔｅｃｔｉｎｇ ｔｈｅ Ｈａｒｄ Ｂｏｉｌｅｄ Ｅｇｇ
2004-04-29 00:00:00
科學(xué)大眾(中學(xué)) 2004年12期
What a dilemma! You've put a cooked egg in the refrigerator and someone stuck it back among the raw eggs.
What a dilemma! You've put a cooked egg in the refrigerator and someone stuck it back among the raw eggs.
