In fact, unfiltered water is good water.
其实未经过滤的水才是好水。
Everywhere you turn, the thick, penetrating scent of unfiltered motor exhaust and water in gutters lingers.
无论去往何处，扑面而来的都是未经过滤的发动机废气和废水的厚重又极具穿透性的气息。
If a tap is used, unfiltered water equal to the amount drawn off should be added to the top.
如果使用了水龙头，等同于排出数量的未过滤水应该增加在顶部。
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