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The greatest discoveries in mathematics are those that unify seemingly unrelated ideas.
The best way to maintain a program is to maintain it.
The future we want must be invented. Otherwise we will get one which we don't want.
森林的真正价值不仅在于其木材,还在于其维持生命的能力。
安全不仅仅是一项政策,它是必须融入我们每项操作的文化。