She has been active in show business for twenty years.
Tips
grammar
娱乐 ("entertainment") + 界 ("circle / world / -dom"). The 界 suffix marks a professional sphere: 学术界 (academia), 商界 (business world), 体育界 (sports world). Compare 娱乐圈 (yúlèquān), the more colloquial slang term especially for celebrity gossip contexts.
