显然，北美自由贸易协定是墨西哥成功的关键；但阻止哥伦比亚成为更加成功的出口国的绝非自贸协定所能解决的交易成本问题。
Clearly, NAFTA was crucial for Mexico; but whatever is preventing Colombia from becoming a more successful exporter is not the kind of transaction costs that FTAs can address.