白垩纪爬行动物

The primitive and uncivilized nature of my life made me feel like a giant reptile during the Cretaceous or Jurassic periods.───其荒莽无文，恍若白垩纪侏罗纪的一只大爬虫。

The prehistoric reptile lived in the Cretaceous period, about 125 million years ago.───这只史前爬行动物生活在约一亿两千五百万年前的白垩纪。