Chorea is an aimless and irregular, fast and involuntary movement of head and face, and four extremities.

舞蹈病临床常见以头面部及四肢无目地不规则，快速不自主的运动，呈突然发作。

Lucius Malfoy made an involuntary movement; for a fraction of a second, it seemed he expected to receive Voldemort's wand in exchange for his own.

卢修斯·马尔福不自主地移动了一下，有那么一刻，他看起来似乎在盼望伏地魔会把自己的魔杖交给他。

Epilepsy is marked by seizures stemming from abnormal electrical activity in the brain, causing involuntary movement or behavior. Drug treatment is given to prevent seizures.

癫痫是由大脑异常放电造成的癫痫发作，导致不自主的运动或行为。药物治疗能够防止癫痫发作。

Other ocular signs include involuntary rhythmic movement of the eyeball.

其它眼睛特征包括眼球无意识而有节奏的运动。

Hiccup is a brief involuntary inspiratory movement followed by glottal closure.

呃逆是一个简短的自愿吸气运动其次是声门关闭。