形容词
中文翻译：不变的
同义词：
['constant', 'unchanging', 'stable']
例句：
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1. The weather has been unvarying since last week.
自从上周以来，天气一直保持不变。
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2. The company's policies have remained unvarying throughout the years.
该公司的政策多年来一直保持不变。
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3. The temperature has been unvarying since yesterday afternoon.
自昨天下午以来，温度一直保持不变。