onset
US /ˈɑːn.set/
UK /ˈɑːn.set/

1.
開始, 發作
the beginning of something, especially something unpleasant
:
•
The onset of winter brought cold weather.
冬季的開始帶來了寒冷的天氣。
•
Early onset of the disease makes it harder to treat.
疾病的早期發作使其更難治療。
開始, 發作
the beginning of something, especially something unpleasant