If something hums, it makes a low continuous noise.
The birds sang, the bees hummed...
Within five hours, the equipment will be humming away again...
When you hum a tune, you sing it with your lips closed.
She was humming a merry little tune...
He hummed to himself as he opened the trunk.
If you say that a place hums, you mean that it is full of activity.
The place is really beginning to hum...
On Saturday morning, the town hums with activity and life.
Hum is sometimes used to represent the sound people make when they are not sure what to say.
Hum, I am sorry but I thought you were French.
There is relatively little information about hummed, maybe you can watch a bilingual story to relax your mood, I wish you a happy day!