并对影响挤出效应的变量作了定性研究。
Besides, qualitative research is done on the variations which influence the "crowd out effect".
挤出效应；
但在给定条件不变的情况下，挤出效应有逐渐减小的趋势。
However, the extrusion effect would decrease under the given constant conditions.
但在给定条件不变的情况下，挤出效应有逐渐减小的趋势。
However, the extrusion effect would decrease under the given constant conditions.
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