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drones (noun)
Drones are unmanned aerial vehicles (UAVs) that are controlled remotely or fly autonomously using software-controlled flight plans. The term can also refer to a continuous, low humming sound or, historically, to male bees that do not gather nectar.
Think of a 'DRone' as a 'Distant Robot' that makes a 'Dull Roar'. The 'DR' starts both 'Drone' and 'Dull Roar'.
The drones is flying. → The drones are flying.
I heard the drowns of the bees. → I heard the drones of the bees.
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