It is certainly difficult to find an economic rationale for the decision.

这无疑难以为该决定找到经济上的依据。

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As economic rationale for this special treatment, policymakers often cite positive externalities generated by FDI through productivity spillovers to domestic firms.

对于给予外企这些特殊待遇的经济解释，政策制定者们常常引证说明，FDI对国内企业的生产效率外溢，可以产生正的外部效应。

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However, the rationale for such initiatives is not, of course, solely economic.

但是，这些积极行动的根本原因当然不全是出于经济目的。

《柯林斯英汉双解大词典》

But in a lengthy technical appendix to the report, the staff also offer a kind of economic rationale.

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It is hard to see the economic rationale for creating a bubble in the middle of the tax code.

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However, this proposal, which cheekily invaded the chancellor's turf, owed more to internal party politicking over the succession to Mr Blair than to any convincing economic rationale.

ECONOMIST: Tax politics