What is the purpose of sprinklers sprinkling water everywhere during the day?

The role of sprinklers is to sweep away urban dust and keep the air quality as good as possible. I believe that if people are allowed to make a choice, most people will not let the dust of the city cover the sky because the garden sprinklers splash water. For sewage splashing, after hearing the sound of the music horn of the sprinkler, it is best to stay away from it, and don't dirty the newly worn clothes in the morning. The main function of sprinkler is to wash the road surface to keep it moist and reduce the dust all over the sky. Sprinklers can also water the flowers and trees in the green belt. Sprinklers can also sprinkle water on construction sites, factories, coal yards and other road conditions to reduce dust. Sprinklers can also be used as emergency fire sprinklers.