名词
中文翻译：沙床过滤器
同义词：
['sand filter', 'sand bed filter例句：1. The sand-bed filter is used to remove impurities from the water before it reaches the treatment plant.（沙床过滤器用于在水到达处理厂之前去除杂质。）2. The sand-bed filter is an effective way to treat wastewater', 'as it can effectively remove pollutants.（沙床过滤器是一种有效的废水处理方法，因为它可以有效地去除污染物。）']
例句：
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1. The sand-bed filter is used to remove impurities from the water before it reaches the treatment plant.
沙床过滤器用于在水到达处理厂之前去除杂质。
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2. The sand-bed filter is an effective way to treat wastewater, as it can effectively remove pollutants.
沙床过滤器是一种有效的废水处理方法，因为它可以有效地去除污染物。
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3.The sand-bed filter has been proven to be a cost-effective solution for small-scale wastewater treatment.
沙床过滤器已被证明是小型废水处理的低成本解决方案。