volatile
[ˈvɑ:lətl]
adj.
易变的，不稳定的;
（液体或油）易挥发的;
爆炸性的;
快活的，轻快的;
例句:
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It's thought that the blast occurred when volatile chemicals exploded.
人们认为，易挥发的化学物质爆炸时产生了冲击波。
来自柯林斯例句
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There have been riots before and the situation is volatile.
以前曾发生过暴乱，现在局势不太稳定。
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Armed soldiers guard the streets in this volatile atmosphere.
目前局势动荡不定，有武装士兵在街道上警戒。
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But it isn't just volatile to the downside.
来自BBC
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This was the basis of their volatile communication hypothesis.
来自SA
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They are very volatile and just asking for survival.
来自WSJ
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Gasoline is volatile.
汽油易挥发。
来自《权威词典》
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With the markets being so volatile,investments are at great risk.
由于市场那么变化不定，投资冒着很大的风险。
来自《权威词典》