众所周知,大国能够运用关税工具操纵贸易条件,使之有利于己方。但同时许多人认为,这样做容易招致贸易报复,从而使各国相对于自由贸易条件下的情形均蒙受损失。我们将在本文中提出一种简单的纯粹交换模型,并表明哪一种禀赋形式与这种看法相一致。通过这个模型,我们发现如果一国相当大,那么即便遭受报复。它也能够从关税战中获取利益。因此我 As we all know, big powers can use tariff instruments to manipulate their terms of trade to their advantage. At the same time, however, many believe that doing so tends to incur trade retaliation, thereby causing each country to suffer losses vis-à-vis situations of free trade. We will present in this paper a simple pure exchange model and show which kind of endowment is consistent with this view. Through this model, we find that if a country is quite large, then even retaliation. It can also benefit from tariff warfare. so I