组成;构成;组合方式；When you talk about the composition of something, you are referring to the way in which its various parts are put together and arranged. [usu with supp]
Television has transformed the size and social composition of the audience at great sporting occasions…
电视改变了重大体育赛事观众的规模和其社会阶层构成结构。
Forests vary greatly in composition from one part of the country to another.
一个国家不同区域的森林在组成结构上存在很大的差异。