名词
中文翻译：渐变
同义词：
['grading', 'grading system', 'grade sequence例句：1. The gradation of the colors in the painting is quite impressive.（这幅画中颜色的渐变非常令人印象深刻。）']
例句：
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1. The gradation of the colors in the painting is quite impressive.
这幅画中颜色的渐变非常令人印象深刻。
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2.The gradation of the population in the city is changing rapidly.
这座城市的人口分布正在迅速变化。
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3.The gradation of the students' performance is based on their individual abilities.
学生成绩的分级是根据他们的个人能力而定的。