In general, special solution of non-homogeneous linear equation of constant coefficient of the second order is obtained by the method of undetermined coefficient, but it's process is too complicated.

二阶常系数非齐次线性微分方程的特解一般都是用“待定系数”法求得的，但求解过程都比较繁琐。

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Information to be represented for engineering application is usually too complex to be stored in single record or in homogeneous set of records.

工程应用领域的数据库所表示的信息通常是很复杂的，用常规的一个记录或同类记录组的方式难以存储这类数据。

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The danger here is that Ford risks making its designs too homogeneous--a risk Ford knows only too well.

FORBES: Magazine Article

In this it is hardly alone: few countries are ethnically homogeneous, and all too many are riven by ethnic or religious animosity.

ECONOMIST: Forlorn Fiji