parentheses

英 [pəˈrɛnθɪsiːz]

美 [pəˈrɛnθəˌsiz]

n. 插入语
parenthesis的复数

柯林斯词典

圆括号
Parenthesesare a pair of curved marks that you put around words or numbers to indicate that they are additional, separate, or less important. (This sentence is in parentheses.)
插入语
Aparenthesisis a remark that is made in the middle of a piece of speech or writing, and which gives a little more information about the subject being discussed.
PHRASE 插一句
You say 'in parenthesis' to indicate that you are about to add something before going back to the main topic.
1. In parenthesis, I'd say that there were two aspects to writing you must never lose sight of.
  插一句，关于写作，我认为有两个方面你绝不能忽视。