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一般而言，过滤速度越慢，水质越高。
In general, the slower the rate of filtration, the higher the quality of the water.
youdao
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噪音低，速度快，四普及过滤积木。
Low noise, fast, quad universal filter building block.
youdao
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噪音低，速度快，四普及过滤积木。
Low noise, fast, quad universal filter building block.
youdao