"See you later!"
I'm also becoming frustrated by the lack of audio for these one off words
That one seemed a bit unfair. Did we cover it in an earlier lesson? I don't see it in the vocabulary list for this lesson, so literally the only way of translating it was to copy the hint, as there was no way I could know or even guess. And it's another one without audio, so I still don't know what it sounds like.
it's not incorrect, but להתראות is more of a "good bye", "bye bye" etc, נתראה [nit-ra-e] is more accurate (literally: "we will see/meet (each other again)")