十五

十五

"Fifteen"

In this sentence, '十五' specifies an age, meaning 'fifteen'.

我今年十五岁。

I am fifteen years old.

Here, '十五' refers to a day—specifically, the fifteenth day in a month.

今天是农历正月十五。

Today is the fifteenth day of the first lunar month.

In this case, '十五' represents a specific numerical value, 'fifteen', used as an amount of money.

这个衣服打完折后只要十五块钱。

This piece of clothing costs only fifteen yuan after the discount.