n.活力( energy的名词复数 )；[物理学]（原子、电、辐射的）能；[常用复数]精力；（有效地发挥的）力量 双语释义：n.(名词)[U]活力,干劲,能力 the quality of being full of life and action; power and ability to do a lot of work or be physically active[P]精力 the power which one can use in working[U]能,能量,能源 the power whi