ord.第五十
num.第五十；五十分之一

The fiftieth anniversary of the company will be celebrated with a grand event.
公司的五十周年纪念将以盛大的活动庆祝。
She saved up for five years to reach her fiftieth birthday without debt.
她存了五年钱，为了在五十岁生日时没有债务。
He turned a milestone age, the fiftieth, and decided it was time to retire.
他到了五十岁的里程碑年纪，决定是时候退休了。
It took them until the fiftieth try to finally solve the complex math problem.
他们尝试了五十次才终于解决了这个复杂的数学问题。
In their fiftieth wedding anniversary, they exchanged heartfelt vows again.
在他们的金婚纪念日，他们再次交换了深情的誓言。
The fiftieth state of the United States is Hawaii.
美国的第五十个州是夏威夷。
She completed her fiftieth marathon, an incredible feat for her age.
她完成了她的第五十个马拉松，对于她的年龄来说是个了不起的成就。
The fiftieth episode of the TV series marked a significant turning point in the storyline.
这部电视剧的第五十集标志着剧情的一个重要转折点。
The fiftieth year of the museum saw a record-breaking attendance.
博物馆的第五十年迎来了破纪录的参观人数。
On his fiftieth birthday, he received a special gift from his children.
在他五十岁生日那天，他收到了孩子们送给他的一份特别礼物。