surrogate

名词 surrogate:

1. someone who takes the place of another person
   同义词：alternate, replacement
2. a person appointed to represent or act on behalf of others
   同义词：deputy

形容词 surrogate:

1. providing or receiving nurture or parental care though not related by blood or legal ties
   同义词：foster

1. Fiction is a poor surrogate for real experience.
   小说中的事远逊於实际体验。