a volatile situation can suddenly change or become more dangerous （局势）易变的，变化无常的，动荡不定的 | a volatile stock market 涨落不定的股市 |
| The political situation was becoming more volatile. 政治局势正变得越来越动荡不安。 |
| | a | someone who is volatile can quickly become angry or violent （人）暴躁的 | |
| | b | a volatile region or country is a place where violence is likely to develop suddenly （地区或国家）暴力冲突一触即发的 | |
| | c | a volatile liquid or substance can easily change into a gas （液体或物质）易挥发的 | |