lack of stability; the state of being unstable
不稳定,不稳固
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political and economic instability .政治和经济的不稳定。
tendency to unpredictable behaviour or erratic changes of mood
行为无常;情绪不定。
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instabilityn.不稳定;不稳固;行为无常;情绪不定
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stabilityn.稳定;稳定性
"late Middle English: from French