名词
中文翻译：平均年流量
同义词：
['average annual discharge', 'average annual runoff', 'average annual inflow']
例句：
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1. The river's average annual flow is around 20 million cubic meters.
这条河的平均年流量约为2亿立方米。
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2.The reservoir stores water from the nearby streams and releases it during average annual flow periods.
水库储存附近河流的水，并在平均年流量期间释放。
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3.The city relies on its average annual flow of freshwater for drinking and irrigation.
这个城市依靠其平均年流量的淡水来饮用和灌溉。