单语范例（未经PONS编辑处理）
Seizures may develop over time with the highest risk before 2 years of age and the onset of puberty.
en.wikipedia.org At the onset of 2009 international service resumed.
en.wikipedia.org Broad-spectrum empirical therapy (see below for choices) with high doses of one or more antibiotics should be initiated at the onset of fever.
en.wikipedia.org The age of onset is between 410 years with peak age between 57 years.
en.wikipedia.org With the onset of early summer it turns into a spine-skeleton.
en.wikipedia.org