n.开端，发生，肇始(尤指不快的事件)

原形：onset复数：onsets

Eric went to see a doctor at the onset of a fever.
埃里克开始发烧时便去看医生了。
Their troops withstood the onset of the enemy.
他们的部队抵挡住了敌人的进攻。
Lisa's life was finally extinguished by the onset of liver complaint.
丽萨的生命之火终因肝病发作而被掐灭了。
The onset of winter brings colder temperatures and shorter days.
冬季的到来伴随着更低的气温和更短的白昼。
The early onset of dementia in her family was a cause for concern.
她家族中早发性痴呆的现象引起了担忧。
The sudden onset of the storm caught us all by surprise.
暴风雨的突然来袭让我们都感到意外。
Researchers are studying the genetic factors contributing to the onset of diabetes.
研究人员正在研究导致糖尿病发病的遗传因素。
The onset of puberty varies among individuals but generally occurs between ages 8 and 14.
青春期的开始时间因人而异，但通常发生在8至14岁之间。
The economic recession had an abrupt onset, leading to widespread unemployment.
经济衰退来得突然，导致了大规模的失业。
With the onset of spring, the flowers began to bloom.
随着春天的到来，花儿开始绽放。
Early detection is crucial in managing the onset of any chronic illness.
早期发现对于管理任何慢性病的发病至关重要。
The disease's onset can be so gradual that symptoms may go unnoticed at first.
这种疾病的发病可能非常缓慢，一开始症状可能不被注意。
Regular exercise can delay the onset of age-related health problems.
定期锻炼可以延缓与年龄相关的健康问题的发生。