求翻译：在投资上，由于供、排水设施的规模大大缩小，故在一般条件下水冷便宜。是什么意思？

In terms of investment, due to supply and drainage facilities, much smaller scale, it is cheaper in the water under normal conditions.

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In investment, because for, the draining water facility scale reduces greatly, therefore the water cooling is cheap under the generic condition.

On the investment, due to the scale of supply and drainage facilities are substantially smaller, cheaper under normal conditions so cold.

In investment, support, scale of pumping equipment greatly dwindle, so the water-cooling is cheap under the general condition.