《哈利波特与魔法石》开篇第一句好在哪里？

原句是"Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much."，翻译：“女贞路4号的德思礼夫妇，总得意地说他们是十足的正常人，多谢关心。”这句话用口语化的插入语"thank you very much"，立刻塑造了德思礼夫妇古板又不耐烦的性格，同时埋下魔法世界和普通世界的反差伏笔。