括号内英语表达怎么说

In English, the term for something written in parentheses is "parenthetical." For example, you might say "The author included a parenthetical remark in the text" to refer to a statement or phrase that is written in parentheses within a larger piece of writing. Parentheses are often used to provide additional information or to set off text that is less important or tangential to the main point of the writing.