infusion  
noun uk/ɪnˈfjuː.ʒən/ us/ɪnˈfjuː.ʒən/
  (ADDITION)      
  [ C or U ]注入;灌输 
the act of adding one thing to another to make it stronger or better
  An infusion of $100,000 into the company is required. 公司需要注入10万美元的资金。 
   (DRINK)      
 [ C ](热水)泡制 
a drink made by leaving tea leaves or herbs in hot water
  She drinks an infusion of herbs. 她喝冲泡的草药。