名词
中文翻译：过滤
同义词：
['filtration', 'purification', 'clarification']
例句：
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1. The water was so dirty that it needed to be refiltrated before drinking.
水太脏了，需要过滤后才能喝。
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2. The scientist used a special filter to refiltrate the polluted water.
科学家使用一种特殊的过滤器来净化被污染的水。
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3. The process of refiltration is crucial for removing impurities from the water.
净化过程对于从水中去除杂质至关重要。