n.病因学，病原学，致病源

原形：etiology复数：etiologies

The etiology of cancer is multifactorial, involving genetic, environmental, and lifestyle factors.
癌症的病因是多因素的，包括遗传、环境和生活方式等因素。
The etiology of depression is not fully understood, but it's believed to result from a combination of genetic and environmental influences.
抑郁症的确切病因尚不完全清楚，但被认为是由遗传和环境因素共同作用的结果。
The etiology of Alzheimer's disease is still a subject of ongoing research, with several theories proposed.
阿尔茨海默病的成因仍然是研究的热点，已经提出了几种理论。
The etiology of diabetes is primarily linked to genetics, although poor diet and lack of exercise also play a significant role.
糖尿病的主要病因与遗传有关，但不良饮食和缺乏运动也起着重要作用。
The etiology of autism spectrum disorder (ASD) is complex, with both genetic and environmental factors contributing to its development.
自闭症谱系障碍的成因复杂，既有遗传因素也有环境因素影响其发展。
The etiology of schizophrenia is thought to involve a combination of genetic and neurobiological factors, as well as environmental triggers.
精神分裂症的成因被认为包括遗传和神经生物学因素，以及环境触发因素。
The etiology of the common cold is primarily caused by viruses, with rhinoviruses being the most common culprits.
普通感冒主要由病毒引起，其中鼻病毒是最常见的元凶。
The etiology of Lyme disease is transmitted through the bite of an infected blacklegged tick, commonly found in forested areas.
勒夫病的病因是通过受感染的黑腿蜱虫叮咬传播，这种蜱虫常见于森林地区。
The etiology of obesity is a complex interplay between genetics, metabolism, and behavioral factors, such as diet and physical activity.
肥胖的成因是基因、新陈代谢和行为因素（如饮食和运动）之间的复杂相互作用。
Researchers are still investigating the etiology of COVID-19, but it is believed to have originated from an animal source before spreading to humans.
研究人员仍在研究COVID-19的成因，但相信它最初是从动物身上传播到人类的。