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The challenge of unifying all forces of nature is one that has driven theoretical physics for over a century.
统一自然界所有力的挑战是一个多世纪以来推动理论物理学发展的动力。
The essence of computational complexity is to understand the limits of what can be computed efficiently.
浅陋的人,不能和他谈论深奥的见解;愚蠢的人,不能和他谋划有智慧的事。井底之蛙,不能和它谈论东海的快乐。