回头再说。

Let's discuss this later.

怎么办，到那时再说。

What shall we do, leave it until then to discuss?

这事先搁一搁，过两天再说。

Let's put this matter aside for the moment and discuss it again two days from now.

东西不怎么好，再说也太贵了。

These things are not very good, and what's more they are too expensive.

再说我的知识也不够

what's more I'm not knowledgeable enough