enhance       
verb [ T ] uk/ɪnˈhɑːns/ us/ɪnˈhæns/
C1 提高;增加;增强;增进
to improve the quality, amount, or strength of something
  These scandals will not enhance the organization's reputation. 这些丑闻可不会提高这个组织的声誉。 
 - More examples
 - It's things like this that enhance the quality of life.
 - The latest revelation certainly won't enhance her image.
 - Smart personnel practices enhance the value of a company and its stock.
 - A number of our clients want to look younger to enhance their career prospects.
 - Pictures can then be enhanced on a pc.