mathematical expression
中文翻譯：
【計】 數學表達式字典網
例句：
- One of a pair of marks, [ ], used to enclose written or printed material or to indicate a mathematical expression considered in some sense a single quantity.方括弧，中括弧符號之一，用於托住一手寫或印刷或標明被視作單一數量單位的數字表達式
字典網