One can quibble about the accuracy of such a definition but it also conveys the essence of what evolution really is.
对这样一个定义的精确性还可以吹毛求疵，但是这个定义也表达出了“什么是进化”的本质。
A pragmatist might contend that this is no time to quibble about economic theories. We need measures that get proven results.
实用主义者或许会声称，现在没有时间辩论经济理论，我们需要能证明结果的措施。
A pragmatist might contend that this is no time to quibble about economic theories. We need measures that get proven results.
实用主义者或许会声称，现在没有时间辩论经济理论，我们需要能证明结果的措施。
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