Following are a number of back-translations as well as a sample translation for translators of Isaiah 13:18:

• Kupsabiny: “(They) will kill the young men of Babylon with arrows,
  and (they) will not show mercy even to the children.” (Source: Kupsabiny Back Translation)
• Newari: “By shooting arrows with [their] bows they will kill young men.
  They will neither feel heart-broken, having compassion on nursing babies [lit.: children who drink milk],
  nor will they show love and kindness to children.” (Source: Newari Back Translation)
• Hiligaynon: “They will-kill with bows-and-arrows the young men of Babilonia. They will-have- no -mercy on the children including the infants.” (Source: Hiligaynon Back Translation)
• English: “With their arrows, the soldiers of Media will shoot the young men of Babylon;
  they will not even act mercifully toward infants or children!’” (Source: Translation for Translators)