trade indifference curve

例句：

1. 1. This graphshows the trade indifference curve of the economy.
   这张图表展示了经济中的贸易无差异曲线。
2. 2. The economists used this curve to analyze the impact of tariffs on trade.
   经济学家们利用这条曲线来分析关税对贸易的影响。
3. 3. The company's strategy was based on understanding the trade indifference curve of its customers.
   该公司的战略是基于了解其客户对产品需求的无差异曲线。