barrier :n.障碍
bilateral :a.双边的
boycott :v.抵制
dumping :n.倾销
free trade :自由贸易
Normal Trade Relations :正常贸易关系
protectionism :n.保护主义
trade agreement :贸易协议
trade friction :贸易磨擦
trade imbalance :贸易不均衡
trade surplus :贸易出超
trade talk :贸易会谈