You know, I am still not too clear about the hydrologic cycle, the transfer of water back and forth between the earth and the atmosphere.
你知道，我仍然不是很清楚水文循环，也就是水在地球和大气之间的来回转移。
The hydrologic cycle is a useful starting point for the study of water supply.
水文循环是学习给水知识的有用的起点。
The circulation of water through this system is described by the hydrologic cycle.
水在这个体系中的循环是用水循环来描述的。
As we have already noted, the movement of water into the ground is part of the hydrologic cycle.
我们已经说过，水向地下运动是水文循环的一部分。
All water of the hydrosphere participates in the hydrologic cycle, a complex circulation of water between the ocean, atmosphere, and land.
水圈内所有水都参与水的循环，即海洋、大气层和陆地之间的综合循环。
There is growing evidence that global warming is speeding up the hydrologic cycle-that is, the rate at which water evaporates and falls again as rain or snow.
越来越多的证据显示，全球暖化已经使水文循环加速，换言之，降雨、落雪、再蒸发的速度越来越快。
While evaporation from the oceans is the primary vehicle for driving the surface-to-atmosphere portion of the hydrologic cycle, transpiration is also significant.
虽然海洋蒸发的水蒸气是水循环中地球表面到大气这一渠道的首要组成部分，植物蒸腾所占的部分也颇为惊人。
Only when a system possesses natural or artificial boundariesthat associate the water within it with the hydrologic cycle may theentire system properly be termed hydrogeologic.
只有当某一地质系统拥有自然的或人工的界限，将该系统内的水与水文循环起来，这整个系统方能被恰当地称为与水文地质学相关。
Only when a system possesses natural or artificial boundaries that associate the water within it the hydrologic cycle may the entire system properly be termed hydrogeologic.
只有当一个系统拥有自然的或人工形成的边界来把边界中的水与水文循环联系起来的时候，才有可能把整个的系统恰当的成为与水文地质学有关。
Glaciers are part of Earth's hydrologic cycle and are second only to the oceans in the total amount of water contained.
冰川是地球水循环的一部分，其含水量仅次于海洋。
The global average withdrawal of fresh water was 9% of the amount that flowed through the world's hydrologic cycle. Both Latin America and Africa used less than 6% (see table).
全球平均能汲取降水量的用水，只占全球的水循环水量的9%，至于拉丁美洲和非洲能用到的水量，更低于6%(见下表)。
Global warming also seems to be speeding up the earth's hydrologic cycle, causing both floods and droughts (more rains fall in shorter periods, with longer gaps between).
全球变暖也在加快地球水循环速度，降雨周期拉长，强度增大，既能导致洪水泛滥，也会促成连日无雨的旱情。
Global warming also seems to be speeding up the earth’s hydrologic cycle, causing both floods and droughts (more rains fall in shorter periods, with longer gaps between).
全球变暖似乎也加速了全球水循环，带来洪水和干旱（更多的降雨集中在短时间内，两个时间段内相隔时间变长）。
The global average withdrawal of fresh water was 9% of the amount that flowed through the world’s hydrologic cycle.
世界水循环中，每年平均只有9%的淡水流失。
The differences between Tritium (3h) and other global falloff radioactive products lie in its close relation to hydrologic cycle.
氚(3H)与其它全球散落放射性产物的不同之处，在于它与水文循环密切关联。
Infiltration is an important process in hydrologic cycle, in the source region of Yangtze River, infiltration of soil moisture has impact in runoff and plateau ecology.
入渗是水文循环过程中一个重要环节，在长江源区，土壤水分入渗对径流的影响很大，也是高原生态系统重要的影响因素。
The latent capacity of utilizing groundwater is variable, which depends on the land processes of the regional hydrologic cycle.
区域地下水资源利用潜力与水文循环陆地过程相关。
The complete hydrologic cycle, however, is much more complex.
然而，完整的水循环要复杂得多。
The complete hydrologic cycle, however, is much more complex.
然而，完整的水循环要复杂得多。
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