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The concept of topological protection in electronic systems is a profound insight that bridges abstract mathematics and practical physics.
The mind is very much influenced by its previous impressions.
The laws of physics are the same everywhere in the universe.
过去是一个陌生的国度;那里的人做事方式不同。
说话有分寸则少得罪人;行为有节制则少悔恨;爱慕有节制则要求少;快乐有节制则祸败少;饮食有节制则疾病少。