num. 十五；十五个 (the number 15)

There are fifteen holes in the back yard. 后院有十五个洞。

Fifty minus fifteen is thirty-five. 五十减去十五等于三十五。

Five times three is fifteen. 五乘以三是十五。

A quarter is equal to fifteen minutes. 一刻钟等于十五分钟。

The minimum temperature is minus fifteen degree Celsius. 最低温度摄氏零下十五度。

Fifteen silver florins; he didn't want that. 十五个银币，他不要那个。

Now Paige had fifteen sons and twenty servants. 佩奇有十五个儿子、二十个仆人。

Fifteen percent of the water is polluted. 百分之十五的水被污染了。

In India, there are fifteen official languages. 印度有 15 种官方语言。

After fifteen years of teaching, he was sent to the Ministry of Education.

任教15年后，他被调到教育部。

For fifteen francs a month she found a tiny six-floor room.

她找到了一个6层楼极小的房间，每月十五法郎。

It was stolen twenty years ago when Ted was a boy of fifteen.

那辆自行车是在20年前泰德还是个15岁的小伙子时被偷的。

Looking after fifteen noisy children is no laughing matter.

照看15个吵吵嚷嚷的孩子可不是闹着玩的事。

She counted out fifteen pence and passed it to the salesgirl. 她数出15个便士交给女店员。

The chicks hatch out after fifteen days. 小鸡过十五天就孵出来了。

The duke first went into tails at only fifteen. 这位公爵十五岁时就开始穿燕尾服了。