That's a great tip, but I'd like to insist to be sure: when unstressed, the o sounds exactly like the a? Or does it keep a bit of an o "soul", if you know what I mean? Oh, and another question if I may: how to recognise the stressed syllable in a word? Are there any rules for that? Thanks!
I wasn't too specific in my original comment. The pronunciation of unstressed vowels changes from word to word and is often different even in the same word. For example, in молоко (milk), the first о is a /ə/ (schwa) sound, but the second о is pronounced /ɐ/. In пока, the о is also pronounced /ɐ/, so it is not exactly an /a/. I'd recommend looking at the IPA vowel chart at https://en.wikipedia.org/wiki/Vowel to learn the differences between these sounds.
Yes, See You Later, or After a While. Пока often appears in other contexts having to do with passage of time which is not specified. I found this in a child's reader and grammar "Что Я Видел" on the second page: "И там он пока будет жить." which means and there he will live for a while.
Пока has the colloquial meaning of "bye." But this is not its literal meaning. Later, or After a While might be better interpretations. Пока appears in other contexts having to do with passage of time which is not specified. I found this in a child's reader and grammar "Что Я Видел" on the second page: "И там он пока будет жить." which means "And there he will live for a while."