"I am a doctor by profession."
Translation:Z zawodu jestem lekarzem.
the "zed" is when you hit turtle. In slow wersion, TTS tries to say "z" separately from other words, so it pronounces it like in alphabet. It is the TTS mistake that moderators commented about but cannot correct it.
When you say "z" or "w" you attach it to the next word, so here it sounds like "zzawodu"