bloc trade

例句：

1. 1.The bloc trade agreements have been a major source of economic growth for many countries.
   集团贸易协定一直是许多国家经济增长的主要来源。
2. 2. The bloc trade system is designed to promote fair competition and protect the interests of small and medium-sized enterprises.
   集团贸易体系旨在促进公平竞争，保护中小企业的利益。
3. 3. The bloc trade agreements have also led to increased trade barriers between countries.
   集团贸易协定也导致了各国之间的贸易壁垒增加。