a remark which is added to a sentence , often to provide an explanation or extra information , and which is separated from the main part of the sentence by commas , brackets or dashes
发音
例句
1. There is no space between the function name and the parenthesis. 函数名与括号之间没有空格。 2. In this expression, we do not need a multiplication sign or parenthesis. 这个表达式中,我们不需要乘号或括号。