a hyperactive child的用法和样例：
- A hyperactive new drug;a hyperactive thyroid gland.
- A hyperactive deep tendon reflex was noted, but there was neither muscle weakness nor hepatomegaly.
- One answer is that the country has a hyperactive president, constantly on the go, who expects the French to be so too.
- "You're a person with a hyperactive brain.You react to things immediately as they come to you.