During the last 20 years, the world has witnessed dramatic proliferation of regional and bilateral preferential trade agreements. Indeed, bilateral trade flows covered by such agreements now amount to roughly half of the world’s imports, and have contributed significantly to the dramatic growth of trade.
在过去20年间，全世界都见证了各类区域性和双边特惠贸易协定的不断膨胀。事实上，这类协议指导下的双边贸易流大概已经占到了全球进口量的半壁江山，也对贸易的大幅增长发挥了极大推动作用。