en-             
prefix uk/ɪn-/ /en-/ us/ɪn-/ /en-/ (before b or p em-)
 (用于构成动词)放入…中,用…包住
used to form verbs that mean to put into or onto something
  encase 包住 
 encircle 围绕 
 endanger 危及 
  (用于构成动词)使
used to form verbs that mean to cause to be something
  enable 使能够 
 endear 使被人喜爱 
 enlarge 扩大 
 enrich 使富足 
  (用于构成动词)使有,使具有
used to form verbs that mean to provide with something
  empower 授权