名词
中文翻译：渐变
同义词：
['gradual', 'transition', 'grading', 'progression']
例句：
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1.The temperature gradually rose during the day.
温度在白天逐渐升高。
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2. The company has made a significant gradation in its product line.
该公司在其产品线上实现了重大的升级。
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3.The gradation of colors in the painting is breathtaking.
这幅画中颜色的渐变令人惊叹。