"hum" 的定义和意义

to hum

嗡嗡

to sing a tune with closed lips

嗡嗡

to make a low, continuous, and steady sound

嗡嗡

to be filled with a continuous, low noise

嗡嗡

to be busy or engaged in a lot of activity or work

Hum

a humming noise

the state of being or appearing to be actively engaged in an activity

例子

He hummed as he walked down the street.

She hummed softly to herself while waiting for the bus.

During the power outage, they hummed to pass the time until the lights came back on.

The children hummed together to create a soothing melody.

The crickets hummed in the warm summer evening.

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