1. Not only does this cause morbidity for patients, but also enormous healthcare and socioeconomic costs. 不仅对患者发病的原因，也是巨大的医疗和社会经济成本。
2. Xerostomia has a significant impact on the patient?s speech, deglutition, sleep, and increases the morbidity rate of the tooth. 鼻咽癌放疗后口干燥症对患者的讲话、吞咽、睡眠有严重影响，患牙病的几率增加。
3. Research finds that MEV is the etiological agent of mink viral enteritis and causes acute diarrhea in mink, with high morbidity and mortality. 研究表明，MEV是引起水貂病毒性肠炎的病原体，能够引起水貂剧烈腹泻，具有较高的发病率和死亡率。
英英解释
n.
1. the relative incidence of a particular disease
2. an abnormally gloomy or unhealthy state of mind
3. the quality of being unhealthful and generally bad for you
