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。
2.1
- (of a person) liable to display rapid changes of emotion（人）易变的, 多变的, 变化无常的。
2.2
- (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。
派生词
volatility
noun词源
Middle English （in the sense 'creature that flies'， also， as a collective， 'birds'）： from Old French volatil or Latin volatilis, from volare 'to fly'.