Tag nrho cov txheej txheem tsim khoom lag luam tau muab tawm tswv yim ntawm no txawm hais tias txhua yam yog tseeb txog daim duab.
Tag nrho cov txheej txheem tsim khoom lag luam tau muab tawm tswv yim ntawm no txawm hais tias txhua yam yog tseeb txog daim duab.