Old English fifteogoða "fiftieth;" see fifty + -th (1). Compare Old Norse fimmtugande, and, with a different suffix, Old Frisian fiftichsta, Dutch vijftigste, Old High German fimfzugsto, German fünfzigste.
权威例句
1. He retired in 1970, on his fiftieth birthday.
他在1970年自己50岁生日时退了休。
2. A golden wedding is the fiftieth anniversary of a marriage.
金婚是结婚五十周年纪念日.
3. Dartmouth College just marked the fiftieth anniversary of that summer study.
在那个夏季研究上,Dartmouth大学正好是第五十周年校庆.
4. This new method was brought into existence in the fiftieth.
这一新方法出现于五十年代.
5. It'sounded like the very thing for a fiftieth - anniversary celebration.