n. 快活, 活泼, 精神充沛

[ noun ]
characterized by high spirits and animation
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Vivacity \Vi*vac"i*ty\, n. [L. vivicitas: cf. F. vivacit['e].]
The quality or state of being vivacious. Specifically:
(a) Tenacity of life; vital force; natural vigor. [Obs.]

The vivacity of some of these pensioners is little
less than a miracle, they lived so long. --Fuller.
(b) Life; animation; spiritedness; liveliness; sprightliness;
as, the vivacity of a discourse; a lady of great
vivacity; vivacity of countenance.

Syn: Liveliness; gayety. See {Liveliness}.