名词短语
中文翻译：平均降雨年同义词
同义词：
['average year of rainfall', 'average year of precipitation']
例句：
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1. The region has a history of experiencing years of average rainfall.
该地区有经历多年平均降雨的历史。
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2. This year's average rainfall is significantly lower than last year's.
今年的降雨量比去年明显减少。
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3. The drought in the region has led to years of average rainfall.
该地区的干旱导致多年平均降雨量下降。