Cách sử dụng
The word 'cogwheel' refers to a type of wheel that has teeth or cogs around the edge. These teeth fit with other cogwheels to create movement in a machine. Cogwheels are commonly used in machines such as clocks, engines, and bicycles. To use the word 'cogwheel' in a sentence, you might say, "The cogwheel in the clock helps to turn the hour hand."