虽然地球的75%被水覆盖,但只有大约2%是来自河流、湖泊、冰雪的淡水。
While 75% of our planet is covered with water, only about 2% is fresh water that comes from rivers, lakes, ice and snow.
这些因素包括混乱的大气波动、相对较慢但同样不稳定的海洋活动、地表变化,以及冰雪的覆盖范围。
These factors include the chaotic fluctuations of the atmosphere, the slower but equally erratic behavior of the oceans, changes in the land surfaces, and the extent of ice and snow.
淡水以湖泊、河流、地下水和冰雪的形式存在。
Freshwater exists in lakes, rivers, groundwater, and frozen as snow and ice.
At the northern extreme of the Rift Valley, is Mount Hermon, which is the highest point. It is snow covered, Mount Hermon.
在大裂谷的最北端是黑门山,那是最高点,黑门山被冰雪覆盖。
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