1. It was Mary''s seventeenth birthday.
    那是玛丽的十七岁生日。

1. 第十七：sixteenth第十六 | seventeenth第十七 | eighteenth第十八

2. 第十七的：seventeen 十七 | seventeenth 第十七的 | seventh 第七 的

3. \u0064\u0061\u006E\u0063\u0069\u002E\u0039\u0031\u0031\u0063\u0068\u0061\u002E\u0063\u006F\u006D

3. 第十七;十七日：七点系泊系统 seven-point mooring system | 第十七;十七日 seventeenth | 七轨磁带 seven-track tape

4. seventeenth在线翻译

4. 第十七,第十七个：sixteenth 第十六,第十六个 | seventeenth第十七,第十七个 | eighteenth第十八,第十八个

1. 第十七
    The seventeenth item in a series is the one that you count as number seventeen.

seventeenth

    e.g. 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。

2. 十七分之一
    A seventeenth is one of seventeen equal parts of something.

1. position 17 in a countable series of things

1. coming next after the sixteenth in position

    Synonym: 17th