求翻译：文章阐述了语言学习系统的概念、结构、功能及类型，对不同类型作了详细的对比，指出嵌入式终端型数字语言学习系统是专业语言教学设备的理想选择是什么意思？

Article illustrates the concept of language learning system, structure, function and type, to a detailed comparison of the different types, that embedded Terminal digital language learning system is ideal for professional language teaching equipment