Before considering each of the three causes above in more detail, let's first look at some background to help you better understand why this happens at all.
在详细讨论上述三个原因之前，我们首先了解一些背景知识，以便更好地理解这种错误发生的原因。
What are the three causes of Avian Flu?
导致禽流感的三个原因是什么？
The top three causes of the accidental injury are: road accident injury (43.4%), drifting-down injury (31.7%) and the bruise injury caused by heavy object (12.8%).
造成意外伤害的原因前三位是交通伤(43.4%)、跌落伤(31.7%)、重物砸伤(12.8%)。
The author emphasizes that the theory of "three causes" for tumors is consistent with the conditions for the activation of human protooncogene in the science of genome.
强调了中医肿瘤病因的“三因”学说与基因组学中人类原癌基因活化的条件相一致；中医学“天人相应”学说与环境致癌、环境治癌及环境对基因表达的影响极为相似；
Three causes have been given for the failure: poor planning, insufficient manpower, and the shortage of material.
失败的三个原因是：计划不周、人力不足、材料短缺。
Three causes have been given for the failure: poor planning, insufficient manpower, and the shortage of material.
失败的三个原因是：计划不周、人力不足、材料短缺。
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