vivacityn.
英 vɪ'væsɪtɪ | 美
中文n. 活泼；快活；精神充沛
词根词源
vivacity (n.)early 15c., "liveliness, vigor," from Old French vivacite or directly from Latin vivacitatem (nominative vivacitas) "vital force, liveliness," from vivax (genitive vivacis) "lively," also "long-lived," from vivere "to live" (see vital).
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