Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 12:4:

• Kupsabiny: “Ears will become deaf
  so you cannot hear the person who is grinding.
  Although a birds may surprise you in the morning and whistle
  you do not hear their whistling.” (Source: Kupsabiny Back Translation)
• Newari: “Before the doors to the courtyard are closed,
  before the sound of the grindstones becomes seldom,
  remember God!
  Formerly when you heard the chirping sound of birds singing, you got up,
  but now (that you are old) their chirpings just seem very faint.” (Source: Newari Back Translation)
• Hiligaynon: “Your (sing.) ears can- no-longer -hear well, even the noise of a millstone or the sound of the birds or the music.” (Source: Hiligaynon Back Translation)