I like to take some energetic exercise at weekend.
我喜欢在周末做些剧烈运动。
His son is an energetic child.
他的儿子是个精力旺盛的孩子。
energetics详细解释
en.er.get.ics n.(used with a sing. verb)（名词）（与单数动词连用）The study of the flow and transformation of energy.力能学：研究能量的流动及转变的学科The flow and transformation of energy within a particular system.能量学：一个特定体系的能量流动和转换
