onset

n.

攻击，袭击；开始，动手；[医]发病；

复数：onsets

onset time初动时间

1. The fierce onset of the enemy broke the ranks of the army.
   敌人的猛烈攻击致使全军大乱。
2. Our troops withstood the onset of the enemy.
   我们的部队抵挡住了敌人的进攻。
3. The onset of the enemy took us by surprise.
   敌人的进攻出乎我们意外。
4. He went to see a doctor at the onset of a fever.
   他开始发烧时便去看医生了。
5. The drug must be taken from the onset of the infection.
   这种药必须在感染的最初期就开始服用。

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Congenital leptin deficiency is associated with severe early-onset obesity in humans
Lifetime prevalence and age of onset distributions of mental disorders in the World Mental Health Survey Initiative.
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Increased amyloid beta-peptide deposition in cerebral cortex as a consequence of apolipoprotein E genotype in late-onset Alzheimer d...
Lifetime prevalence and age-of-onset distributions of DSM-IV disorders in the National Comorbidity Survey Replication.[see comment][...
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Kessler RC, Berglund P, Demler O, Jin R, Merikangas KR, Walters EE. Lifetime prevalence and age-of-onset distributions of DSM-IV dis...