在不需要供冷的季节，热水机组循环地下水，不存在蒸发器的最小水流量的问题。
Does not need cooling at the season, hot water unit circle groundwater, there is no minimum evaporator water flow problem.
到目前为止，最丰富的地下水资源是雨水；这是地下水在水循环中的一个环节。
By far the most abundant type of groundwater is meteoric water; this is the groundwater that circulates as part of the water cycle.
大面积过度放牧扰乱了水循环、减少了地表和地下水资源的补充。
Widespread overgrazing disturbs water cycles, reducing replenishment of above and below ground water resources.
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