求翻译：有形与无形并存，主要是商品贸易，技术贸易，服务贸易三大领域同时存在.一般特质是发达国家需要商品，发展中国家需要技术，一个国家的GDP中，服务业所占比重标志着经济发展水平面，发达占65%，一般发展中国家占15-30%,全球进出总额中，服务贸易占20%左右。是什么意思？

Coexistence of tangible and intangible, primarily commodity trade, technology trade, service trade three areas exist. General characteristics of the developed countries need to commodities, developing countries need technology, a country's GDP, the proportion of marked economic development services

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Visible and invisible coexisting, mainly is the commodity trade, the technical trade, the service trade three big domains also exists. The general special characteristic is the developed country needs the commodity, the developing nation needs the technology, in national GDP, service industry accoun

Coexistence of tangible and intangible, mainly commodity trade, technical trade, trade in three main areas while. General characteristics are needed goods in developed countries, developing countries needed technology, in a country's GDP, share of services marking the level of economic development,

Coexist tangibly and invisibly, it is mainly goods trade, the technological trade, three major domains exist at the same time in service trade. The general speciality is that the developed country needs the goods, developing countries need technology, in GDP of a country, the proportion of service i