名词
中文翻译：不纯
同义词：
['contamination', 'impurity例句：1. The water was so dirty that it was unsafe to drink.（水太脏了，不能喝。）']
例句：
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1. The water was so dirty that it was unsafe to drink.
水太脏了，不能喝。
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2.The food was contaminated with bacteria.
食物被细菌污染了。
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3. The soil is too impure for growing crops.
土壤太不纯净，不适合种植农作物。