通过阐述包装的定义及作用的翻译：Through the role set out definitions of packaging and 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

By describing the definition and role of packaging

Through the role set out definitions of packaging and

Through elaboration packing definition and function

by expounding on the definition and role packaging

Through the role set out definitions of packaging and