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

• 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。
• 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。
• 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。
• 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。
• On the basis of its onset, constipation may be classified as acute or chronic.
  根据病发情况，便秘可分急性和慢性两种。
• He went to see a doctor at the onset of a fever.
  他开始发烧时便去看医生了。
• The sudden onset of winter caused havoc with rail and air transport
  冬天的突然降临让铁路和航空运输系统陷入混乱。
• 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；
• The patient may or may not notice these symptoms during the onset of the vertigo.
  眩晕发作时，病人可能感觉到、也可能感觉不到耳鸣和听力下降。
• 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。