还有些试验数据来源于以往未发表的哥德堡同一地点在1979 - 2009年间花粉水平的统计数据。
Further data for the study came from previously unpublished statistics of pollen levels collected for 31 years at the same location in Gothenburg, from 1979 to 2009.
还有些试验数据来源于以往未发表的哥德堡同一地点在1979 - 2009年间花粉水平的统计数据。
Further data for the study came from previously unpublished statistics of pollen levels collected for 31 years at the same location in Gothenburg, from 1979 to 2009.
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