"Czy ta kanapka zawiera mięso?"

Translation: Does this sandwich contain meat?

[Ashibaal]

Honestly, it is very annoying that 33% of all Polish audio has a wrong intonation. And it is terribly counterproductive for students who learn Polish mostly here with this course.

[GalitSchwa]

Why not "Does this sandwich include meat?"? I agree that "contain" is more natural, but "include" is not wrong.

[Jellei]

I asked a native, here's the answer:

I don't think so.
The ingredients in this sandwich include cheese but the the sandwich itself contains cheese.