vitality

n.活力；生命力

visit, visitation, visited, visiting card (US `calling card), visiting professor, visitor, visitors' book, visor, vista, visual, visual aid, visual display unit (abbr 缩写 VDU), visualization, visualization, visualisation, visualize, visualize, visualise, visually, vital, vital statistics, vitalism, vitalize, vitally, vitamin, vitaminize, vitaminise, vitiate, vitiation, viticulture, vitreous, vitrifaction, vitrify, vitriol, vitriolic, vitro, vituperate, vituperation, vituperative, viva, viva voce, vivace, vivacious,