本文从地质构造方面叙述了泉水形成的历史成因。
This paper describes the historical causes of spring forming in the aspect of the geological structure.
其有着深刻的历史成因、政动因、本原因和微观经济基础原因。
It has profound history causes, administration causes, human-based causes and microeconomic base causes.
这种甚为古朴的翻译笔法看似自然与必然，其实有其特定的历史成因。
Such a simple method of translation seems natural and inevitable, yet it has its special historical background.
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