early 14c. (attested from late 12c. in Anglo-Latin), from Anglo-Fr. juree ------ early 14c. (attested from late 12c. in Anglo-Latin), from Anglo-Fr. juree (late 13c.), from M.L. iurata "an oath, an inquest," fem. pp. of L. iurare "to swear," from ius (gen. iuris) "law" (see jurist). Grand jury attested from early 15c. in Anglo-Fr. (le graund Jurre). Meaning "body of persons chosen to award prizes at an exhibition" is from 1851. here,above is an explanation of a word "jury" in terms of its source.but i can't quite understand these sentences above.could you clarify them in your words for me?thanks