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为什么鸡肉、大多数鱼肉是白色的,而牛肉和猪肉是红色的?
17世纪的某个时刻,魁北克的主教面临一个严峻的饮食危机。天主教的教义规定,在长达40天的大斋期内,信徒必须禁食“肉类”,但可以吃鱼。为了不让教徒们饿死,或者更可能是为了满足口腹之欲,教会向梵蒂冈提交了一份神学申请,询问海狸这种常年泡在水里、尾巴有鳞片 ...
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