hum

hum verb uk/hʌm/ uspresent participle hum ming | past tense and past participle hum med hum verb
(MAKE SOUND)

to make a continuous, low sound

жужжать, гудеть
The computers were hum ming in the background. be hum ming
If a place is hum ming, it is busy and full of activity.

кипеть, быть оживленным

hum noun [ C ]
a low, continuous sound

гул
the hum of traffic