形容词
中文翻译：持续的
同义词：
['unchanging', 'everlasting']
例句：
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1.The sun is a constant source of light and warmth.
太阳是恒定的光和热源。
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2.The weather in this region is constant throughout the year.
该地区的天气全年都保持不变。
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3. He has a constant stream of ideas that keep him busy.
他有源源不断的创意，让他忙个不停。