UK: /ˌhaɪpərækˈtɪvəti/ (Note: IPA verified from authoritative sources)
语源 (Etymology)
Origin:
Formed from the prefix "hyper-" (Greek: ὑπέρ, meaning "over, beyond") + "activity" (from Latin activitas, derived from activus "active"). 中文翻译: 词源由前缀“hyper-”（希腊语：ὑπέρ，意为“过度、超过”）+ “activity”（源自拉丁语activitas，来自activus“活跃的”）构成。
Historical Shift:
Coined in the 20th century, primarily in medical and psychological contexts to describe excessive motor activity. The term emerged with the clinical recognition of conditions like attention-deficit/hyperactivity disorder (ADHD). 中文翻译: 形成于20世纪，主要用于医学和心理学语境，描述过度的运动活动。该术语随着注意力缺陷/多动障碍（ADHD）等病症的临床确认而出现。
If no record: N/A (well-documented medical terminology)
解释 (Definition)
中文解释: 多动；活动过度（指异常的过度活跃状态，尤指儿童难以控制的过度运动行为）
English (Oxford):
(n.) A state of excessive activity or movement, often characterized by restlessness and inability to focus, typically associated with certain behavioral disorders.
例句 (Example Sentences)
例句 1: "The pediatrician noted signs of hyperactivity in the child, such as constant fidgeting and difficulty staying seated."
（儿科医生注意到孩子有多动迹象，比如不停坐立不安和难以保持坐姿。） Context: Medical diagnosis of behavioral symptoms.
例句 2: "Excessive screen time has been linked to increased hyperactivity in some studies, though more research is needed."
（一些研究指出，过多的屏幕使用时间与多动倾向
