形容词
中文翻译：不纯的
同义词：
['impure', 'mixed', 'inconsistent', 'indistinct例句：1. The water was histogenous and had to be boiled before drinking.（水不纯，必须煮沸后才能饮用。）']
例句：
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1. The water was histogenous and had to be boiled before drinking.
水不纯，必须煮沸后才能饮用。
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2. The soil was histogenous, making it difficult for plants to grow.
土壤不纯，使得植物难以生长。
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3. The mixture was histogenous, causing the reaction to occur slowly.
混合物不纯，导致反应发生得很慢。