trade restrictions与trade Barrier是不是同一个概念?

trade restrictions与trade Barrier是不是同一个概念? describe why many nations impose trade restrictions,if free trade is the best policy.用英文回答 trade TRADE trade TRADE trade trade trade trade countries usually impose restrictions on free foreign trade to protect___后面应填什么啊A foreign producersB foreign consumersC domestic producersD domestic consumers 求用英文解释几个单词!1.Tariffs 2.Currency Fluctuation 3.Investment Regulations 4.Environmental Restrictions 5.Foreign Relations and Trade Sanctions 6.Safety Regulations 7.Immigration Policies请求用英文解释这几个单词！回答者 英语翻译The export halt drew international attention to Chinese restrictions on export of rare earths and helped lead to the filing last spring of a World Trade Organization case challenging China's right to limit exports of such important minera impose restrictions for sanitary 翻译emissions restrictions 英语翻译Countries that don’t trade in goods and services also tend not to trade in ideas,pluralism or tolerance. trade与trading在英语中有哪些区别 change...for...与trade...for...有什么区别