1 N-COUNT [usually plural] 圆括号 Parentheses are 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.) 圆括号

2 N-COUNT 插入语 A parenthesis is 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. 插入语

3 PHRASE 插一句 You say 'in parenthesis' to indicate that you are about to add something before going back to the main topic. 插一句