Etiology is the study of the causes and conditions of disease.

病因学是研究疾病发生的原因和条件的学科。

The professor of etiology is about to retire.

这位病因学教授即将要退休了。

The philosopher's etiology and teleology can be explicable within historical and philosophical paradigm.

这位哲学家的原因论和目的论可以用历史哲学研究范式解释。

The oxygen radicals theory should be the etiology of presbyacusis.

氧自由基学说应该是老年性聋的发病病因。

The purpose of this study was to investigate the etiology, clinic featuer, and therapy of recurrent nodular nonsuppurative.

该研究的目的是研究复发性结节性非化脓性脂膜炎的病因、临床表现以及治疗方法。

Analyze the etiology, therapeutic methods and curative effect of postoperative gastroplegia syndrome (PGS) after radical colectomy and proctectomy.

分析结直肠癌术后胃瘫综合征（PGS）发生的病因、治疗方法和疗效。

The most common etiology is trauma.

最常见的病因是创伤。

New Credibility for Infectious etiology.

传染病病原学的新依据。