ord.第十五
short十五分之一
n.第十五，十五分之一（与the连用）第十五（个），月的第十五日
num.第十五，十五分之一

原形：fifteenth复数：fifteenths

The fifteenth floor of this building has a stunning view of the city.
这栋建筑的十五楼可以俯瞰城市的美景。
Today is my son's fifteenth birthday, we're planning a surprise party for him.
今天是我儿子的十五岁生日，我们正为他策划一个惊喜派对。
She finished in fifteenth place at the national swimming championships.
她在全国游泳锦标赛中获得了第十五名。
The company marked its fifteenth anniversary with a grand celebration.
公司以盛大的庆祝活动纪念其成立十五周年。
We aim to complete the project by the fifteenth of next month.
我们计划在下个月十五号之前完成这个项目。
The conference will be held on the fifteenth of October, don't forget to mark your calendar.
会议将在十月十五日举行，别忘了在你的日历上标注。
It's our fifteenth wedding anniversary; we're going to renew our vows.
今天是我们结婚十五周年的纪念日，我们要重新宣誓我们的爱情誓言。
The child was enrolled in the fifteenth grade, equivalent to tenth grade in the US system.
这个孩子被编入了十五年级，相当于美国教育系统的十年级。
The company's stock price hit an all-time high on the fifteenth trading day of the quarter.
在本季度的第十五个交易日，该公司的股价创下了历史最高纪录。
The athlete completed the marathon in just under three hours and fifteen minutes.
运动员以不到三小时十五分钟的时间完成了马拉松比赛。