最佳答案：序数词是seventeenth，例如：1.The ornately carved doors were made in the seventeenth century.那些雕饰精美的门制于17世纪。2
序数词是seventeenth，例如：
1.The ornately carved doors were made in the seventeenth century.那些雕饰精美的门制于17世纪。
2.She gave birth to Annabel just after her seventeenth birthday.她17岁生日刚过便生下了安娜贝尔。
3.The reign of Queen Elizabeth lapped over into the seventeenth century.伊丽莎白王朝延至十七世纪。
