enrich  
verb uk/ɪnˈrɪtʃ/ us/ɪnˈrɪtʃ/
  (IMPROVE)      
 C1 [ T ]使丰富,使富含;充实 
to improve the quality of something by adding something else
  Fertilizer helps to enrich the soil. 化肥可以提高土壤肥力。 
 My life was greatly enriched by knowing her. 认识了她,我的生活变得非常充实。 
   (HAVE MORE MONEY)      
 [ T ]使富有,使富裕 
to make something or someone richer
  He claimed that the large stores were enriching themselves at the expense of their customers. 他声称大商店通过盘剥顾客而获利。