year average ph 年均ph值
year average yield 年平均产量
multi-year average 多年平均
whole year average 全年平均
year average content 年平均含量
year average temperature 年平均气温
base-year average price 基年平均价格
year average air temperature 年平均气温
long year average precipitation 多年平均降水量
Oil inventory is well-above last year's level and the 5-year average.
但石油库存却远远超过去年的水平和5年平均水平。
Inventories of oil and oil products are well below five-year average levels.
石油和石油产品库存远低于近5年的平均水平。
Some of the biggest foundations base their grant-giving on a three-year average of their assets.
一些大型基金会以以往三年平均资产为基准衡量捐赠数额。
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