“经贸合作”翻译成economic and trade cooperation, 这是习惯用语.economic is an adjective,trade can be an adjective.In dictionary, Definition of trade:adjective18.of or pertaining to trade or commerce.19.used by, serving, or intended for a particular trade: trade journal.20.Also, composed of, or serving the members of a trade: a trade club. People use economic to avoid a second confused meaning of Economy: economy can be used as a synonym for efficiency (效率的代名词). Fuel economy measures how many miles per gallon a vehicle consumes. For this meaning, we use economical instead of economic as the adjective form.谷歌搜索 "economic and trade" 124,000,000 results"economy and trade" 684,000 results
从语言的社会功能变体来讲,经贸英语是在跨文化国际经贸领域中,主要由生产商、代理商、消费者、投资者等使用的,以进行和完成相关经贸交际活动为目的,在词汇、句法、篇章上具有特定表现形式、表达程式、言语规范及言语规律的,相对稳定的一种功能变体。作为特殊用途英语(English for SpecifiPurposes,ESP),经贸英语(Business English)与其国际经贸交际环境、言语生产者、言语接受者、语体学、语用学、篇章语言学等有密不可分的联系。经贸英语正是在这些联系的基础上显示出其独特的语体特征。