Final source of returns — security selection.
最后一个收益来源，证券选择。
The second is security selection, which isn't dependent on growth but good research.
第二种是证券选择，这一种与增长无关，完全依赖于出色的调研。
A new selection method of security factor was raised.
并在此基础上提出了安全系数选择的新方法。
A new selection method of security factor was raised.
并在此基础上提出了安全系数选择的新方法。
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