其主要思想是通过对选定研究对象的功能及费用的分析，提高对象的价值。
The main idea of VE is to increase the value of the selected objects by studying and analyzing the function and expenditure of them.
“这个发现非常令人兴奋，”德国海德堡马克斯·普朗克天文研究所的赖纳·克莱门特这样说，他在这项研究中负责选定作为观测对象的星球。
"This discovery is very exciting," said Rainer Klement of the Max Planck Institute for Astronomy in Heidelberg, Germany, who targetted the stars in the study.
因而论文选定成书于战国时期的《礼记》作为研究对象。
So the writer select Li Ji compiled in the Warring States Period as the study subject.
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