词组短语短語the third man argument 第三者論証third man argument更多词组英英字典柯林斯英英字典 (in the philosophy of Aristotle) the argument against the existence of Platonic Forms that since the Form of Man is itself a perfect man, a further form (the "third" man) would be required to explain this, and so ad infinitum third man argument剑桥字典third man argument柯林斯字典