名词
中文翻译：渐变
同义词：
['gradation', 'slope', 'incline', 'curve', 'curved', 'curvedness']
例句：
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1. The sun's rays are gradually fading as the day wears on.
随着时间的流逝，太阳的光线逐渐减弱。
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2. The road is steep and requires careful driving to avoid a sudden gradient.
这条路陡峭，需要小心驾驶以避免突然的坡度。
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3.The temperature gradient between the two regions is significant, affecting the climate patterns.
这两个地区的温度梯度显著，影响气候模式。