1. 名詞
   開始, 肇端
   攻擊, 襲擊
   進攻
   the onset of ...(不快之事等):
   ...的來臨
   ...的開始
   ...的攻擊
   ...的襲擊
   /此名詞通常為單數the onset形態/
   /複數為"onsets"/
   

   同義字詞
   aggression,assault,attack,attempt,blitz,blitzkrieg,charge,descent,offense,offence,offensive,onslaught,raid,rush,strike
   alpha,baseline,beginning,birth,commencement,dawn,day one,genesis,get-go,git-go,inception,incipience,incipiency,kickoff,launch,morning,nascence,nascency,outset,start,threshold
   

例句

1. The onset of HAPE is frequently at night.
2. About 25% of cases are "bulbar onset " ALS.
3. The onset of reflux symptoms may be gradual.
4. Onset is usually in childhood or adolescence.
5. This is then followed by the onset of attrition.
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