Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 1:9:

• Kupsabiny: “The things that were shall again be
  and what has happened shall again happen.
  and there is nothing new in this world.” (Source: Kupsabiny Back Translation)
• Newari: “That which has happened previously, is about to happen again,
  and that which has been done before, is about to be done again.
  Nothing new ever happens in this world.” (Source: Newari Back Translation)
• Hiligaynon: “What had-happened in the time-past will- also -happen again. What had-been-done in the time-past will- also -be-done again. There is nothing [intensifier] new that happens on earth.” (Source: Hiligaynon Back Translation)
• English: “Everything continues to be the same as it has always been;
  things that happen have happened previously, and they will happen again.
  What has been done before will be done again.
  There is nothing really new in this world.” (Source: Translation for Translators)