I need to catch some Zs right now.

我现在需要打个盹儿。

You look tired, Dave. Why don't you catch some Zs?

你看起来很累。你咋不打个盹呢?。

You look tired, Dave. Why don't you catch some zs?

戴维，你看起来有点累，怎么不打个盹呢！

He keeps jabbering on and on. How am I ever gonna be able to catch some Zs?

他一直叽叽喳喳说个不停，我怎么能合一下眼呢？