either [ˈaɪðə(r)]

以下由轻松背单词网站提供

adj.任一，两方的；prep.任一，随便任一个；conj.或，也

used in negative sentences instead of 'also' or 'too'

I have bought two books, you can have either. 我买了两本书，你要哪一本都可以。
I don't think either of them are at home. 我想他们中任何一个都不在家。