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The second lesson is that causal explanations are oversimplifications .

第二个启示是因果论太过于简单化。

Causal analysis may also be performed on problems unrelated to defects .

原因分析也可以运用在与缺陷无关的问题上。

These particular causal factors vary from patient to patient .

这些特殊的偶然因素因病人的不同而各有区别。

Causal analysis of a disaster-inducing rainstorm in shandong peninsula .

山东半岛致灾大暴雨成因个例分析。

But those populations didn 't eat a lot of things - sugar , for instance - and any one of those could have been the causal factor .

但那些人很多东西都不吃比如糖，而这些不吃的食物中的任何一种都可能是致病因素。