Following are a number of back-translations as well as a sample translation for translators of Zephaniah 3:10:

• Kupsabiny: “My people who got scattered beyond the rivers of Cush shall bring me sacrifices of food that are given (freely).” (Source: Kupsabiny Back Translation)
• Newari: “My worshipers from across the rivers of country Cush,
  My people who are scattered,
  will bring offerings to Me.” (Source: Newari Back Translation)
• Hiligaynon: “My people who had-scattered beyond the river Etiopia will-bring to me offerings.” (Source: Hiligaynon Back Translation)
• Burmese (translation by A. Judson): “The other side of the rivers of Cush
  the dear daughter of my people who have been dispersed to various places
  They who entreat me
  will bring me a religious offering.” (Source: John Hans de Jong in The Bible Translator 2017, p. 64ff. )
• English: “Then my people who were forced to go to other countries, those who live along the upper part of the Nile River in Ethiopia
  will come to me and bring offerings to me.” (Source: Translation for Translators)