This is a rather complicated problem.

这是一个相当复杂的问题。

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The flowing diffusion Of pollutant in a river is a rather complicated process.

各种污染物在江河中的流动扩散是一很复杂的过程。

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Language education is a rather complicated process, and language should be taken as its core.

语言教育是一个复杂的过程，语言是语言教育的核心。

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But the world is really a rather complicated place, making that planning rather difficult.

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For the last word, however, it makes sense to go to the designers, and they have a rather less complicated take on the subject.

ECONOMIST: Fur and fashion

The Heinbockels, as serial entrepreneurs, had a fairly complicated return, that led to a complicated audit that resulted in a rather lengthy opinion.

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