本文在实际经济问题分析的基础上，首先介绍了经济系统的若干因果关系结构及其运筹原则；

In this paper, on the basis of economic problems analysis in practice, some causal relation structures of economic systems and fundamental rules for their operations research are, at first, proposed;

youdao

乐观的生活态度与健康之间是否有着因果关系尚难明确；有可能是相同的潜在基因综合体或者是某种生理结构使之然。

It's hardly clear that there is a causal relationship between optimism and health; it could be that they are related to the same underlying gene complex or set of mechanisms.

youdao

最重要的是，日本的消费电子行业大约在神户地震时开始结构性衰退，但明显这当中并没有什么因果关系。

Most importantly, the structural decline of Japan's consumer electronics industry started around the time of the Kobe earthquake, yet it clearly would be absurd to attribute any form of causality.

youdao