Following are a number of back-translations of Revelation 9:9:

• Uma: “Their chests were covered with scales like an iron shirt. The sound of their wings was like the sound of a throng of carts [Indonesian: kereta] pulled by horses gong to a battle.” (Source: Uma Back Translation)
• Yakan: “Their chests are covered all over with scales like iron to cover/shield their chests. When they move their wings a sound is heard like the sound of very many horses running, bringing/pulling their wagons to the fighting place.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “They had scales like iron armor, and the sound of their wings when they fly was like the sound of many calesas pulled by horses running when they go to fight.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “Their chests were protected with something like an iron protector. The sound (lit. voice) of their wings, it was like the rumble of many carriages pulled by horses who are running to go join-in-battle.” (Source: Kankanaey Back Translation)
• Tagbanwa: “Their chests were wrapped around with what was like a wrapping of iron. The sound of their wings when arching/beating was like the crackling-sound of wheels of many pulled vehicles for going fighting and the stamping by the horses doing-the-pulling, when coming-together/locking with the enemy.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “Their coverings on their chests appear to be all metal. The sound of their wings is like the sound of wagons which are pulled by running horses going to war.” (Source: Tenango Otomi Back Translation)