黑母鸡比白母鸡聪明

ZX68

betty:"Black hens are cleverer than white ones, aren't they?"
贝蒂：“黑母鸡比白母鸡聪明，对吗？”
Larry:"How do you know?"
拉里：“你怎么知道？”
Betty:"Well, the black hens can lay white eggs, but the white hens can't lay black ones."
贝蒂：“嗯，因为黑母鸡能下白蛋，可白母鸡不能下黑蛋。”