constituent

/kənˈstɪtʃ.u.ənt/

名词

成分；构成部分；要素
What are the basic constituents of the mixture?
这种混合物的基本成分是什么？
（某选区的）选民，选举人
The MP worked hard, always talking to his constituents and listening to their problems.
这位参议员工作努力，总是跟本区选民交谈，听取他们的难处。