asymptomatic [ˌesɪmptəˈmætɪk]

例句:

• While some are extremely painful, vertebral fractures are often asymptomatic until the spine begins to collapse.
  来自WSJ
• I have patients who are HIV-positive and asymptomatic.
  我的一些病人艾滋病病毒检测呈阳性，但却无任何体征。
  
• The disease is often mild and may be even asymptomatic in older children, adolescents, and adults.
  年长儿童 、 青年及成年人患这种疾病时症状常轻微,甚至无症状.
  
• The pediatrician suggested that these are usually asymptomatic and regress without treatment.
  儿科医师认为这种情况通常没有症状,可以不经治疗自行退化.
  
• Celiac disease can even be asymptomatic.
  来自SA
• It's how they're able to hide out in the body for years, with long asymptomatic periods between outbreaks.
  来自SA