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

• Kupsabiny: “If the axe that a person is using is blunt, the strength that he is using is big, but wisdom makes all work easier.” (Source: Kupsabiny Back Translation)
• Newari: “If the axe is not sharp,
  if it has not been kept sharpened,
  more power will be needed.
  but one who is highly skilled will succeed.” (Source: Newari Back Translation)
• Hiligaynon: “If your (sing.) ax is dull and you (sing.) did not sharpen it, you (sing.) need- more -strength to use it. (It is) advantageous if you (sing.) are wise for by it you (sing.) will-succeed.” (Source: Hiligaynon Back Translation)
• English: “If your axe is not sharp ,
  you will need to work harder to cut down a tree,
  but by being wise, you will succeed.” (Source: Translation for Translators)