volatile
adjective uk/ˈvɒl.ə.taɪl/ us/ˈvɑː.lə.t̬əl/
不稳定的；易变的；易怒的，喜怒无常的
likely to change suddenly and unexpectedly or suddenly become violent or angry
Food and fuel prices are very volatile in a war situation. 战争时期食品和燃料的价格极易波动。
The situation was made more volatile by the fact that people had been drinking a lot of alcohol. 人们一直在大喝烈性酒，这让情况变得更加不稳定。
He had a volatile temper and couldn't have been easy to live with. 他的脾气十分暴躁，别人很难与他相处。
（液体或固体）易挥发的，易气化的
A volatile liquid or solid substance will change easily into a gas.