名词
中文翻译：逐渐变细
同义词：
['decrease', 'diminish', 'narrow']
例句：
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1.The river is tapering as it flows through the valley.
随着河流流过山谷，它正在逐渐变窄。
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2.As the sun sets, the light on the hillside begins to taper.
随着太阳落山，山坡上的光芒开始逐渐减弱。
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3.The forest was gradually tapering off into the distance.
森林逐渐消失在远处。