fifty

五十的、五十个

About fifty people showed up for the free concert.

大约有五十个人来看这场免费演唱会。

五十

Twenty-five plus twenty-five equals fifty.

二十五加二十五等于五十。

五十岁

She started learning the piano at fifty.

她五十岁才开始学钢琴。

五十元钞票口语

Do you have change for a fifty?

你有零钱可以换这张五十元的钞票吗。

五十几岁常用复数

Most of the volunteers are in their fifties.

大部分的志工都是五十几岁。

五十年代常用复数

This style of furniture was popular in the fifties.

这种风格的家具在五十年代很流行。