A2 used to introduce a new subject to be considered or to give further informationA2 used to introduce a new subject to be considered or to give further information
顺便说，顺便问一下 I think we\'ve discussed everything we need to - by the way, what time is it? 我想需要讨论的问题我们都讨论了——顺便问一下，几点了？
used to introduce a new subject:used to introduce a new subject:
And now for what we\'re going to do tomorrow. 现在我们来讨论一下明天要做什么。
