形容词
中文翻译：持续的
同义词：
['unchanging', 'everlasting', 'perpetual例句：1. The sun isa constant source of warmth and light.（太阳是恒定的温暖和光明来源。）']
例句：
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1. The sun isa constant source of warmth and light.
太阳是恒定的温暖和光明来源。
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2. Theriver flows through the city, aconstant reminder of its natural beauty.
河流穿过城市，不断提醒着它的自然之美。
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3.The company's policy of constant innovationhas helped it to stay ahead in themarket.
公司不断的创新政策帮助它在市场保持领先。