vital

a.生命的；有活力的；致命的；至关重要的

visibly, vision, visionary, 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 statistics, vitalism, vitality, vitalize, vitally, vitamin, vitaminize, vitaminise, vitiate, vitiation, viticulture, vitreous, vitrifaction, vitrify, vitriol, vitriolic, vitro, vituperate, vituperation, vituperative, viva,