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Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
任何一种成瘾都是恶习,无论是对酒精、吗啡或理想的成瘾。
The best way to get out of a situation is to never get into it in the first place.
农民是我们食品系统的支柱,我们必须用正确的工具支持他们。