形容词
中文翻译：未受污染的
同义词：
['pure', 'unblemished', 'unsullied']
例句：
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1.The water in the lake is uncontaminated by any pollutants.
湖里的水没有被任何污染物污染。
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2. The food was uncontaminated, which made it safe to eat.
食物是未受污染的，所以可以吃。
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3. The soil was uncontaminated, meaning it had not been touched by human activities.
土壤未受污染，意味着它没有被人类活动触及过。