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创新不仅仅是技术的问题;它关乎改变思维方式并接受新的思考方式。
可持续林业不是一种选择,而是我们的责任。
The progress of mathematics is measured by the number of problems it can solve.
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?