n. 成分（constituent的复数）

n an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system

n a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes

n something determined in relation to something that includes it

n (grammar) a word or phrase or clause forming part of a larger grammatical construction

n an abstract part of something