I am a 19-year-old girl

一个十九岁───One is nineteen;女孩子───girl

Twenty minus one is nineteen.───二十减一等于十九。

This is the first championship since nineteen seventy-two for Boston — one of the oldest teams in the NHL.───这是自1972年以来，波士顿首次夺得冠军，它是全国曲棍球联合会中最老的球队之一。

Bochannek says people have the chance to handle some of the objects in the exhibit. He says one of the more popular items is a portable computer from nineteen eighty-one.───契纳克称人们在展览中有机会亲手触摸一些设备，其中最受欢迎的设备之一是一台1981年的便携式计算机。