onset

英 [ˈɒnset]

美 [ˈɑːnset]

n.  开端，发生，肇始(尤指不快的事件)

TOEFLIELTSGRETEM8医学

Collins.1 / BNC.6461 / COCA.7094

牛津词典

noun

• 开端，发生，肇始（尤指不快的事件）
  the beginning of sth, especially sth unpleasant
  1. the onset of disease/old age/winter
     疾病的发作；老年的开始；冬天的来临

柯林斯词典

• N-SING （尤指不快之事的）开始，开端，肇始
  The onset ofsomething is the beginning of it, used especially to refer to something unpleasant.
  1. Most of the passes have been closed with the onset of winter...
     冬天来临，大部分关口均已关闭。
  2. With the onset of war, oil prices climbed past $30 a barrel.
     战争一爆发，油价就攀过了每桶30美元。

英英释义

noun

• (military) an offensive against an enemy (using weapons)
  1. the attack began at dawn
  Synonym:attackonslaughtonrush
• the beginning or early stages
  1. the onset of pneumonia
  Synonym:oncoming

双语例句

• Objective to explore the relationship between time of AF onset and clinical prognosis in acute period of ami.
  目的探讨急性心肌梗塞（ami）急性期间，房颤（af）发作时间与临床预后之间的关系。
• The onset of the disease is usually gradual, starting with fever, general weakness, and malaise.
  该病通常为渐进性发病，开始时出现发烧、全身虚弱和不适。
• Most of the passes have been closed with the onset of winter
  冬天来临，大部分关口均已关闭。
• Conclusion The onset of BPPV may relate to ischemic internal ear but is not relevant with gender and age.
  结论内耳缺血可能与BPPV发病有关，但BPPV发病在不同性别、年龄之间差异无显著性。
• Symptoms of acute onset suggest a vascular cause or seizure;
  急性起病的症状，提示血管性或为癫痫发作；
• Neighbours near his home reported poultry deaths prior to his onset of symptoms.
  在他的症状出现之前，他家附近的邻居报告了禽类死亡。
• The disappearance of monomer droplets at the onset of interval III can be observed visually.
  在阶段Ⅲ开始时就可以目视观察到单体液滴的消失。
• Vomiting is normal at the onset of labor, but persistent vomiting may be a sign of illness.
  呕吐在分娩过程中是正常现象，不过持续性的呕吐有可能会是疾病的表征。
• If you have new onset stomach problem, this is a very likely diagnosis.
  如果你有新的胃部症状，这是一个非常有用的诊断方式。
• A juvenile between the onset of puberty and maturity.
  处于青春期和成熟期的青少年。