然而这些研究多为文字说明或简单的逻辑推理，缺乏经济学模型的指导。

However those studies mostly focus on simple reasoning and lack the economic models.

youdao

然而这些研究多为文字说明或简单的逻辑推理，缺乏经济学模型的指导。

However those studies mostly focus on simple reasoning and lack the economic models.

youdao