五十五的英文：
fifty five

参考例句：

Drivers must not exceed a maximum of 55 miles an hour.
司机不得超过每小时五十五英里的最大时速。

fifty是什么意思：
num. 五十；五十个
n. 五十几；五十年代
adj. 五十的；五十个的；众多的

The number was fifty.
该数字为五十。

The building has fifty stories.
这座大楼有五十层。

She was born in the fifties.
她生于五十年代。

The total amount is in the fifties.
总共五十多个。

He is in the vicinity of fifty.
他在五十岁左右。

five是什么意思：
num. 五
n. 五个一组

A pentagon has five sides and five corners.
五边形有五条边和五个角。

fiveteen contains five and three.
15可被5和3除尽。

He knows five languages.
他精通五种语言。

She has borne five children.
她生了五个孩子。

Five applications a day are necessary.
这种药必须每日敷5次。