Cách sử dụng
The word 'knob' is used to refer to a round, small, and protruding part that you can turn or push to control something. You can find knobs on things like doors, cabinets, and equipment like radios or stoves. For instance, you can turn a doorknob to open or close a door. A volume knob on a stereo system can be turned up or down to make the sound louder or quieter. So, a knob is a simple thing that you can use to manipulate things.