动词
中文翻译：过滤
同义词：
['filter', 'sieve', 'cleanse', 'purify']
例句：
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1.The water was so dirty that it needed to be filtered before drinking.
水太脏了，需要过滤后才能喝。
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2. She used a sieve to remove the seeds from the flour.
她用筛子从面粉中筛出种子。
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3. The scientist conducted a thorough cleansing of the laboratory equipment.
科学家彻底清洁了实验室设备。