名词
中文翻译：纯净度
同义词：
['purity', 'cleanliness例句：1. The air in the city is much more vicid than that of the countryside.（城市的空气质量比乡村好得多。）']
例句：
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1. The air in the city is much more vicid than that of the countryside.
城市的空气质量比乡村好得多。
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2.The lake has a high vicidity, which makes it suitable for fishing.
这个湖的纯净度高，非常适合钓鱼。
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3.The scientist conducted an experiment to test the vicidity of the water samples.
科学家进行了一项实验，以测试水样中的纯净度。