名词
中文翻译：次级过滤器
同义词：
['subordinate filter', 'secondary screen例句：1. The primary goalof the project is to improve efficiency indata processing.（该项目的首要目标是提高数据处理的效率。）']
例句：
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1. The primary goalof the project is to improve efficiency indata processing.
该项目的首要目标是提高数据处理的效率。
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2. Thesecondary filter is designed to remove impurities from the water before it reaches themain treatment plant.
二级过滤器设计用来在水到达主要处理厂之前去除杂质。
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3. Thesecondary filter is crucial for maintaining the qualityof the treated water.
二级过滤器对于保持处理过的水的质量和安全至关重要。