1530s, "attack, assault," from on + set (n.); compare verbal phrase to set (something) on (someone). Weaker sense of "beginning, start" first recorded 1560s. Figurative use in reference to a calamity, disease, etc. is from 1580s.
雙語例句
1. The sudden onset of winter caused havoc with rail and air transport.
冬天的突然降臨讓鐵路和航空運輸系統陷入混亂。
來自柯林斯例句
2. Most of the passes have been closed with the onset of winter.
冬天來臨，大部分關口均已關閉。
來自柯林斯例句
3. The drug must be taken from the onset of the infection.
這種藥必須在感染的最初期就開始服用.
來自《簡明英漢詞典》
4. The onset of depression often follows a traumatic event.
抑郁癥發作常常發生在遭受創傷之后.
來自《簡明英漢詞典》
5. His first hit record marked the onset of an astonishing career.