parenthetical

1. ADJ A parenthetical remark or section is put into something written or spoken but is not essential to it. 附加的; 插入語的[usu ADJ n]

Fox was making a long parenthetical remark about his travels on the border of the country. 福尅斯正在插入一大段題外話，講述他在該國邊境遊歷的故事。

2. parentheticallyADV

Well, parenthetically, I was trying to quit smoking at the time. 嗯，插一句，我那時正嘗試戒菸。

And what, we may ask parenthetically, does it mean?

我們想插問一句，這是什麽意思？