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The gravity model has offered the frame of a general equilibrium, experimental, easy to grasp.
引力模型提供了一个实验性的、易于掌握的、一般均衡的框架。
youdao
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The gravity model has offered the frame of a general equilibrium, experimental, easy to grasp.
引力模型提供了一个实验性的、易于掌握的、一般均衡的框架。
youdao