"우리는 갈비찜을 먹어야 합니다."
Translation:We have to eat braised short ribs.
갈비 = ribs (beef, veal or pork)
갈비구이 (aka "갈비" for short) = grilled / BBQ ribs
*-구이 suffix comes from 굽다, to roast.
찜 is the noun form of 찌다, to steam (cook by vapour)
갈비찜 = stewed/braised ribs
Korean cuisine has a vast variety of -구이 and -찜 dishes but beef dishes are usually quite expensive.