动词
中文翻译：过滤
同义词：
['sieve', 'sieve out', 'screen', 'purify']
例句：
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1. The water was so dirty that we had to filter it through a cloth.
水太脏了，我们不得不用布过滤它。
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2. He used a filter to remove impurities from the water before drinking.
他使用过滤器去除水中的杂质再喝。
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3. Filters are essential for removing pollutants from industrial wastewater.
过滤器对于从工业废水中去除污染物至关重要。