We'll celebrate the seventieth National Day this year.

今年我们将庆祝第七十个国庆节。

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On April 23, 2019, a series of events to celebrate the seventieth anniversary of the Chinese People's Liberation Army (PLA) Navy was held in Qingdao.

2019年4月23号，庆祝中国人民海军建军70周年系列活动在青岛举行。

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I saw an old man the other day, to my astonishment, making the holes with a hoe for the seventieth time at least, and not for himself to lie down in!

有一天，我还看见过一个老头子，使我惊讶不已，他用一把锄头挖洞至少挖了第七十次了，但他自己却不预备躺在里面。

youdao

It was the seventieth annual spring gala of American Ballet Theatre, and David H.

NEWYORKER: Covert Operations

If it was summer and the Yankees were playing, a radio (after his seventieth birthday, a color television my dad bought him) broadcast the game.

NPR: Excerpt: 'City of Thieves'