It is estimated that he had to eat one fiftieth of his own body weight each day.

据估计它每天要吃下的食物达到自己体重的五十分之一。

And fiftieth is the correct way to write the ordinal number.

而 fiftith 才是序数词的正确写法。

We were at Mexico, celebrating a frined's fiftieth birthday party .

我们去墨西哥参加朋友的50岁生日聚会。

Last month I was in Birmingham to mark the fiftieth anniversary of Dr. King’s assassination.

上个月，我去了伯明翰市，参加了马丁•路德金刺杀五十周年悼念会。

Those from husband to wife, or from wife to husband, to the fiftieth penny.

夫传妻者，妻传夫者，至第五十文。

Among the names was Golda Meyerson, who had recently celebrated her fiftieth birthday.

其中包括戈尔达·迈耶森 (Golda Meyerson)，她最近刚刚庆祝了自己的五十岁生日。

I want to say something that will seem natural, something that I would write to my cousin about our fiftieth birthday.

我想要说一些很自然的话，我会写给我表亲的庆祝五十岁生日的话。

On the Fourth of July, eighteen twenty-six, the nation began its celebration of the fiftieth anniversary of the Declaration of Independence.

1826年7月4日，美国开始庆祝《独立宣言》五十周年。

I would like to wish you a happy fiftieth birthday—may you have fifty more!

祝你50岁生日快乐—并祝你再活50年。

In 1720, interest was reduced from the twentieth to the fiftieth penny, or from five to two per cent.

1720 年， 利息从 20 便士降至 50 便士， 或从 5% 降至 2%。