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科学的美在于它能不断给我们带来惊喜。
一个有纸、笔、橡皮擦并且坚持严格的行为准则的人,实质上就是一台通用图灵机。
In theory, there is no difference between theory and practice. But, in practice, there is.
Policymakers should be open to revising their views based on new evidence.