For example, meeting growing demand by finding a new source of water or by building a new dam in a place like California could cost up to 60 cents per cubic meter of water.
举例来说，在加利福尼亚州为满足日益增长的需求而寻找新水源或修建新的水坝，每立方米的水价可能要上升到60水美分。
But switch the source to a river or an aquifer, and the cost of a cubic meter of water can plummet to 10 to 20 cents, and farmers often pay far less.
如果从河流或地下取水，每立方米的成本可大幅降至10至20美分，农业用水的成本甚至更低。
The sand content in the water of Qiandao Lake averages just 0.007 kilos per cubic meter.
这千岛湖的水啊平均含沙量是每立方米0.007千克。
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