[in'vɔləntəri]
involuntary
a. 自然而然的,无意识的,不知不觉的

词形变化:

名词:involuntariness 副词:involuntarily

例句与用法:

  1. An involuntary of joy escaped from her lips.
    她那情不自禁的喜悦脱口而出。
  2. A sudden, involuntary, spasmodic muscular contraction causing severe pain, often occurring in the leg or shoulder as the result of strain or chill.
    痉挛一种由于紧张或寒冷而导致的肌肉突发性、无意识的、间歇性的紧缩,能导致剧烈的疼痛,通常发生在腿部或肩部
  3. The involuntary and consistent response of an organism to a given stimulus.
    生理反应生物体对所受到的刺激作出的无意识的连贯反应
  4. She gave an involuntary smile.
    她不由自主地笑了笑。

英英解释:

形容词 involuntary:

  1. not subject to the control of the will- John F.Kennedy
  2. 同义词:nonvoluntary, unvoluntary
  3. controlled by the autonomic nervous system; without conscious control