题目内容：

英语翻译
1.各种形式的贸易壁垒主要来源于政府干预.（government intervention）.2.近年来中国经济迅速增长,贸易结构也相应改变很大.3.当前国际贸易中最大的困难是非关税壁垒,如进口配额、出口管制等.4.现在的大多数贸易协定是多边协定,不是双边协定.

优质解答

!All kinds of trade barriers mainly comes from government intervention.2.In resent years China's economy increase rapidly,the trade structure also changes greatly.3.At present the most difficuties in international trade are non-customs duty,such as import volume of trade and export control.4.At present most of the trade agreements are multiple agreements,not by-letural agreements.