求翻译：长期从事市场学、管理学、贸易理论教学和研究。通晓英语，能流利使用英语翻译、解释和评价西方应用经济学领域的概念、原理和方法体系。是什么意思？

Engaged in marketing, management, trade theory, teaching and research. Proficient in English, fluent in English translation, interpretation and evaluation of the field of applied economics of Western concepts, principles and methodology.

engaged in long-term market studies, management, trade theory teaching and research. Fluent in English and fluent in English translation, interpretation and evaluation of Western applied economics field system concepts, principles and methods.

Is engaged in the market study for a long time, the management science, the trade theoretical teaching and the research.Thoroughly understands English, can use English translation fluently, explain and appraises the West applied economics domain the concept, the principle and the method system.

Has long been engaged in marketing, management, trade theory teaching and research. Familiar with English, fluency in English translation, interpretation and evaluation of the Western economic concepts, principles and methodologies in the field of the application.

Engaged in marketing, management, trade theory, teaching and research. Proficient in English, fluent in English translation, interpretation and evaluation of the field of applied economics of Western concepts, principles and methodology.