overactive
adjective (also over-active) uk/ˌəʊ.vərˈæk.tɪv/ us/ˌoʊ.vɚˈæk.tɪv/
（身体的某部分）过于活跃的，活跃得不正常的
(of part of the body) producing too much of a substance, or reacting too quickly
With an overactive thyroid, metabolism speeds up. 甲状腺过度活跃，新陈代谢加快。
Over-active bladder is a frequent and urgent need to use the toilet. 膀胱过度活跃是指频繁而迫切地需要上厕所。
Opposite: underactive
（大脑或想象）想太多的
(of someone's mind or imagination) thinking too much about things
She had dismissed the voices as figments of her overactive imagination. 她认为那些声音不过使自己过度活跃的想象虚构出来的。
I have a terribly over-active mind and anything that's happened in the day whirls around my head endlessly. 我的大脑总是想太多，白天发生的任何事情都会在我的脑海里无休止地旋转。
- More examples
- His towering height was caused by an overactive pituitary gland.
- One possibility is that your intestine is overactive and things are passing through you before they get a chance to be dissolved.
- Maybe it's an overactive imagination distracting him from the problem at hand.
- Sometimes I find it hard to fall asleep - I put it down to an overactive brain.