eightieth

n.

第八十；八十分之一；

adj.

第八十的；八十分之一的；

复数：eightieths

1. All our family came to Grandad's eightieth birthday party.
   我们所有的亲属都来参加了祖父八十寿宴。

Vladimir Ivanovich Ritus (on his eightieth birthday)
Editorial to mark the eightieth birthday of Academician Detchko Pavlov
PERSONALIA: Georgii Timofeevich Zatsepin (on his eightieth birthday)
Review and approval of the reports of the Executive Board on its Eightieth and Eighty-first Sessions
Functional Analysis on the Eve of the 21st Century: In Honor of the Eightieth Birthday of I. M. Gelfand
In honour of Daniel Jones, papers contributed on the occasion of his eightieth birthday 12 september 1961 by Jones
A SELECTIVE BIBLIOGRAPHY OF WRITINGS ABOUT TUDOR MUSIC 1992—2007: FOR JOHN HARLEY ON HIS EIGHTIETH BIRTHDAY
Anglo-Saxon Coins. Studies presented to Sir Frank Stenton, on the occasion of his eightieth birthday by R. H. M. Dolley
Through the Zone of Nonbeing A Reading of Black Skin, White Masks in Celebration of Fanon's Eightieth Birthday
${$Collection of articles dedicated to Pavel Sergeevič Aleksandrov on the occasion of his eightieth birthday.$}$ Uspehi Mat. Nauk 31