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在数学中,提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
Sun don't shine forever, but as long as it's here then we might as well shine together.
过度捕捞是短视行为,我们必须为子孙后代留下丰饶的海洋。
安全不是成本——它是对我们最宝贵资源(人)的投资。