Siyi language exploration source: how many layers of rolling

The original meaning of rolling: Daishui runs the streaming appearanceThe boundless falling wood is raised, and the Yangtze River is rolling. - Tang Du Fu AscensionG滚n as a verb, rolling, rolling

The two "traffic police do not work in the business and violate the rules", and have been well received!

Traffic police, what is the definition of everyone? What kind of work attitude do ...