冰川是地球水循环的一部分,其含水量仅次于海洋。
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 global average withdrawal of fresh water was 9% of the amount that flowed through the world'u2019s hydrologic cycle.世界水循环中,每年平均只有9%的淡水流失。