理解morpheme is the smallest unit of language in terms of the

morpheme is the smallest unit of language in terms of the relationship between expression and content帮忙理解一下这里的the relationship between expression and content
morpheme 语素;词素
morpheme is the smallest unit of language:语素是语言的最小单位
in terms of =根据；用…的话；就…而言；以…为单位
the relationship between expression and contents =措辞与内容之间的关系
就措辞与内容之间的关系而言,语素是语言的最小单位.

对啊 表达和内容 其实就是what it means和what it says嘛