volatility的解释n.挥发性,挥发度,轻快,（性格）反复无常
(oftendisapproving)(ofapersonortheirmoods)changingeasilyfromonemoodtoanother:ahighlyvolatilepersonalityvolatility的例句Amathematicalmeasureofthesensitivityofratesofreturnonaportfoliooragivenstockcomparedwithratesofreturnonthemarketasawhole.Ahighdegreeofsuchsensitivityindicatesmoderateorhighpricevolatility.证券的β因素一种数学手段，对某有价证券或某种给定股票的回报率与整个市场回报率相比的敏感性进行测量。这种高程度敏感性表明其价位处于中度或高度易变状态
