showing or involv -ing great activity or vitality
精力充沛的,充满活力的;需要剧烈活动的
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moderately energetic exercise .适度的体能锻炼。
【物理】 高能的
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energetic X-rays .高能X射线。
of or relating to energy (in the technical sense)
(与)能量(有关)的:
"mid 17th cent. (in the sense ‘powerfully effective’): from Greek