seventh

1. 他在第七回合中被打倒了。
   He was laid out in the seventh round.
2. 古羅馬歷中自三、五、七、十各月的十五日起算的前第九日即三、五、七、十各月的第七日；其它各月的第五日
   The ninth day before the ides of a month; in the ancient Roman calendar, the seventh day of March, May, July, or October and the fifth day of the other months.
3. 九和弦由第三、第七和第九三個基礎音組成的和弦
   A chord consisting of a root with its third, seventh, and ninth.
4. 它剛出版了第七版。
   It has just entered the seventh edition.

第的英語翻譯：

七的英語翻譯：