Give the definition ofa stem and point out the stem（s） in the wo

Give the definition ofa stem and point out the stem（s） in the word "internationalist".
【正确答案】：A stem can be defined as a form to which affixes of any kind can be added. " Nation, national, international, internationalist" are all stems.
【题目解析】：在词语构成的知识中，词根、词干和词缀都是重要概念，词根是不可以再拆解的最小单位，而词干则是可以往上加词缀的任何形式。