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世界上最著名的谜语是希腊神话里的斯芬克斯之谜了:“有一种动物,早晨用四只脚走路,中午用两只脚,晚上用三只脚。”谜底是人,
The world’s most famous riddle is the mystery of the Sphinx in Greek mythology: “There is an animal who walks with four feet in the morning, two feet at noon, and three feet at night.” The answer is human.