hum
Definition
To make or produce a low, steady continuous sound.
中文 发出或产生低沉、稳定的连续声音。
Example
"The refrigerator began to hum after it was plugged in."
To make or produce a low, steady continuous sound.
中文 发出或产生低沉、稳定的连续声音。
"The refrigerator began to hum after it was plugged in."