Life makes many complicated and often irrational demands on all of us.

生活总是对我们提出复杂和无理的要求。

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Human behaviour is in fact far more complex and often quite irrational.

实际上，人类行为非常复杂，而且常常相当荒谬。

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Human behaviour is in fact far more complex and often quite irrational.

实际上，人类行为非常复杂，而且常常相当荒谬。

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