impulsive

Buying that expensive sports car was an impulsive decision that he later regretted when he saw the insurance bill.

(Chinese) 购买那辆昂贵的跑车是一个冲动的决定，后来当他看到保险单时就后悔了。

Children are often more impulsive than adults because the part of their brain responsible for self-control is still developing.

(Chinese) 儿童通常比成年人更冲动，因为他们大脑中负责自我控制的部分还在发育中。