Try removing the dent in your table tennis ball. What do you have to do for this?
| August 5, 2020 | Education
the ball must be immersed in hot water, the pressure inside will increase and it will straighten out.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.