求翻译：因此本文主要研究来源相同不同季节四个年份（2008年、2009年、2010年、2011年）陈年安溪铁观音的生化指标的变化，每间隔120天测定一次，共测三次。是什么意思？

This paper mainly studies from the same source the four different seasons of the year (2008, 2009, biochemical changes of the 2010 vintage Tie Guan Yin, 2011), every 120 days measurement time, were measured three times.

It is therefore this major research source are the same from season 4 year (2008, 2009, 2010, 2011, in the river ) Iron goddess of biochemical indicators of change, every 120 days, and a total measurement test 3 times.

Therefore the this article main research originates the same different season for four years (in 2008, in 2009, in 2010, in 2011) the aging Anxi Oolong tea's biochemistry target change, is separated 120 day to determine every time one time, altogether measures three times.

Primary research sources in this article are the same in different seasons in four years (2008, 2009, 2010, 2011) aging changes of biochemical indexes of Anxi tie Guan Yin, 120 days per interval measurement, measuring a total of three times.

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