How about Watson's salary?

Watson can polish his salary. A polishing machine takes about 200 a day to 300 yuan. Now many processing and manufacturing industries need to go through this process. After treatment, it becomes smoother and smoother. There are many kinds of polishing, including metal and wood, as well as the polishing of primer. Take furniture polishing as an example, there are two kinds of polishing: wood polishing and oil polishing. The salary of wood polishing is low, about one day in 200 yuan, and the salary of oil polishing is high, about one day in 300 yuan.