volatile

volatile
[ˈvɒlətʌɪl]
adjective
  1. (of a substance) easily evaporated at normal temperatures
    （物质）易挥发的
  2. liable to change rapidly and unpredictably, especially for the worse
    易变的，变化无常的（尤指向坏的方向变化）
    the political situation was becoming more volatile.
    政治局势变得更为捉摸不定。
    ■(of a person) liable to display rapid changes of emotion
    （人）易变的，多变的，变化无常的
    ■(of a computer's memory) retaining data only as long as there is a power supply connected
    （计算机内存）易失的
noun
  1. (一般作 volatiles)a volatile substance
    挥发物
派生
volatility
noun
语源
  1. Middle English (in the sense 'creature that flies', also, as a collective, 'birds'): from Old French volatil or Latin volatilis, from volare 'to fly'
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