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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