- It's the sort of behaviour that can make all the difference in a place of serious shortages.
这一举措在这个资源 严重匮乏的地方显得极为重要 - Yet all this can change in an instant.
然而所有这一切即刻就将发生改变 - The fortunes of many deserts are ruled by distant rains.
许多沙漠的命运都由远方的雨水决定 - This water fell as rain in mountains more than a hundred miles away.
这些水来自100英里之外的山地降雨 - It's known as a flash flood
它叫做“瞬时洪水” - and called that because the water may run for just a single day.
之所以这么叫是因为 这些水可能仅仅流淌一天左右 - It's an event that only happens once or twice a year at the most.
而且一年最多也只发生1～2次
This water fell as rain in mountains more than a hundred miles away. 这些水来自100英里之外的山地降雨
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