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1·In the meantime his life remained run down, planless, and empty and idle.

他不知道那启动力会从哪儿来；他的生活就一直那么沮丧、空虚、没有计划、无所事事。

2·But it would never occur to anyone to call their method planless and irrational.

但谁都不会想到称他们的方法是无计划无理性的。

3·Why should evolution, exactly as Darwin knew it and described it, be planless and irrational?

为什么恰如达尔文所理解和描述的那样，进化就该是无计划和无理性的呢？