He scored two home runs back to back in the 9th inning.

他在第9局连续获2分。

《新英汉大辞典》

The 9th-century Codex Sangallensis is an abecedarium.

9世纪的《桑加利抄本》是一本入门读物。

youdao

Even in the 9th-6th centuries BC there already was a powerful state called Urartu on its territory.

甚至在公元前9-6世纪，在领土上已经存在一个强大的国家，称为乌拉尔图。

youdao

And so, Harrison became the 9th president of the United States.

VOA: special.2009.01.22

Recorded September 9th, 1947, Grace Murray Hopper in case you're interested. This was the lab book of Grace Murray Hopper.

想知道的话大概是在1947年9月9号，记载于,的实验手册中。

麻省理工公开课 - 计算机科学及编程导论课程节选

I finished the 8th, the 9th and the 10th rows.

VOA: special.2009.02.07

Fittingly, it was near the 9th Street market that two Italian brothers co-created the cheesesteak, albeit accidentally.

BBC: Love, war and the Philly cheesesteak

It is said that the first people to inhabit Meteora arrived in the 9th Century.

BBC: Meteora, Greece��s city in the sky

That case is now before the 9th U.S. Circuit Court of Appeals in San Francisco.

NPR: Exec Threatens To Pull Fox Signal If Aereo Goes On