Following are a number of back-translations as well as a sample translation for translators of Jeremiah 50:2:

• Kupsabiny: “‘It is announced to all nations
  and flags raised
  it is spoken out so that nothing at all will be hidden that,
  ‘This city of Babylon has been captured,
  the idol called Bel has been humiliated
  he is Marduk whom they bow to.
  Everything that those people pray to has been shamed
  and its idols have been destroyed.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “‘Announce to the nations the news without holding-(anything)-back! And lift-up a banner as a sign that Babilonia will-be-taken-by-force! Her gods including Bel and Marduk will- surely -be-smashed and put-to-shame.” (Source: Hiligaynon Back Translation)
• English: “This is what Yahweh says:
  ‘Proclaim a message among the nations;
  do not withhold any of it;
  raise up a signal flag
  to announce that Babylon will be captured.
  Its chief god Marduk, whose other name is Bel, will be completely disgraced,
  and all the other statues and idols will be shattered.” (Source: Translation for Translators)