The integration by second substitution is an important method of calculating indefinite integral, it has a certain application, it usually applies to calculate some integrals of irrational function.

第二换元积分法是求函数不定积分的一种重要方法，具有一定的适用范围，对某些无理函数的积分的求解通常使用该方法。

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Irrational division of investigation jurisdiction resulted in weakening the function of power of investigation on official crimes.

侦查管辖划分的不合理导致职务犯罪侦查权出现了功能弱化现象。

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The idea of God is an absolutely necessary psychological function of an irrational nature, which has nothing whatever to do with the question of God's existence.

上帝的理念长短感性天性的一种相对必要的心理性能，它与“上帝是否存在”这一问题绝不相关。

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Female desirability begins to be constructed in terms of irrational fashion and the high heel - once separated from its original function of horseback riding - becomes a primary example of impractical dress.

BBC: Why did men stop wearing high heels?

The global economy is a complex system and is a function of millions of individual actors making decisions for both rational and irrational reasons.

FORBES: The Bailout Mentality -- The REAL "New Normal"