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The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.
Technology must be people-oriented, otherwise it is meaningless.
弦理论提供了一个框架,使得量子力学和广义相对论能够和谐共存。
We must be guardians of the ocean, not plunderers.