英语语法分析

Characteristic of rationality, invisibility and flexibility, it has become the most complicated and most trickish kind of trade barrier, and the biggest barrier to international trade.

并且它具有的合理性、隐蔽性、灵活性等特点，使其成为当今国际贸易中最复杂、最难对付的一种贸易壁垒，成为国际贸易的最大障碍。