双胞胎之一英文怎么说

双胞胎之一英语表达为 "one of a twin"。

“twin” 是英语中表示双胞胎的常用词，它来源于古英语“twinn” 和 拉丁语 “gemellus”，本意为双生子。

例句:

She is one of a twin, her brother is her identical twin.
(她是一对双胞胎中的一个，她的兄弟是她的孪生兄弟。)
He is one of a twin, but he is an only child in his family.
(他是一对双胞胎中的一个，但在他的家庭里他是独生子。)
She is one of a twin, her sister is her fraternal twin.
(她是一对双胞胎中的一个，她的姐姐是她的非同卵双胞胎。)