形容词
中文翻译：Unknown
同义词：
['unstable', 'unsteady', 'unstable']
例句：
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1. The weather is nonstationary, so we need to be preparedfor sudden changes in temperature.
天气不稳定，我们需要为温度的突然变化做好准备。
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2. Thestock market is nonstationary, whichmeans that its price movements are not predictable.
股票市场是非静态的，这意味着其价格变动是不可预测的。
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3. The system is nonstationary, and it'sdifficult to determine the long-term trend.
该系统是非静态的，很难确定长期趋势。