名词
中文翻译：无常
同义词：
['changeable', 'unpredictable']
例句：
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1. Life is full of surprises and changes, just like the weather.
生活充满了惊喜和变化，就像天气一样。
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2. The situation has changed, and we need to adapt to the new circumstances.
情况已经改变，我们需要适应新的情况。
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3. Change is constant, but it's how we respond to it that makes all the difference.
变化是永恒的，但如何应对它才是一切的关键。