The tale of growth economics, as Helpman tells it, is organized around a number of themes: the importance of the accumulation of physical and human capital;
正如赫尔普曼所述，增长经济学的叙述围绕一系列主题展开：物质和人力资本积累的重要性； 技术因素对积累速度的影响；
Grossman and Helpman, in particular, model producers as contributing financially to incumbent politicians in return for their providing or maintaining tariff protection.
特别是在格罗斯曼与赫尔普曼设立的模型中，生产者资助了当权政客，以换取关税保护的实行或维护。
Grossman and Helpman, in particular, model producers as contributing financially to incumbent politicians in return for their providing or maintaining tariff protection.
特别是在格罗斯曼与赫尔普曼设立的模型中，生产者资助了当权政客，以换取关税保护的实行或维护。
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