adj.不稳定的；反复无常的；易挥发的

n.挥发物

Food and fuel prices are very volatile in a war situation. 在战争环境下,食物和燃料的价格都很不稳定。

He has a highly volatile personality. 他有着反复无常的个性。

He had a rather volatile temper and can't have been easy to live with. 他脾气暴躁,很难相处。

Petrol is volatile. 汽油容易挥发。