- the beginning of something, especially something unpleasant开端，发生，肇始（尤指不快的事件）
- the onset of disease/old age/winter疾病的发作；老年的开始；冬天的来临
Extra Examples- Symptoms include the acute onset of pain.症状包括疼痛的急性发作。
- The development of pubic hair signals the onset of puberty.长出阴毛标志着青春期的开始。
- at the onset of the war战争开始时
- An active and healthy lifestyle can delay the onset of disease in later life.积极和健康的生活方式能够推迟晚年疾病的发作。
- His first hit record marked the onset of an astonishing career.他的第一张风行一时的唱片标志着辉煌事业的开始。
Oxford Collocations Dictionaryadjectiveverb + onsetpreposition- after the onset
- at the onset
- before the onset
- …
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