twelfth

He poled his twelfth home run in the sixth inning.

在第六回合他打出了他的第十二次本垒打。

Captain: You're the twelfth in a long line of governesses, who have come to look after my children since their mother died.

上校：自从孩子们的母亲去世以后，你是来照看他们的第十二位女家庭教师。