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youdao

The number of extant manuscripts, however few, really does not allow scholars to infer how many ancient Latin manuscripts of a work survived to the ninth, the twelfth, or even the fifteenth century.

现存的手稿，不论数量多么少，也不能让学者推断一部作品的古代拉丁手稿有多少存活到了九、十二，甚至是十五世纪。

youdao

Traditional healers spoke the language at least as early as the fifteenth century during the height of the Inca civilization.

VOA: special.2009.12.02

They can push down the thirteenth partial and bring up the fifteenth and thereby change the sound of a clarinet into a French horn.

压低第十三分音,或者提高第十五分音,从而将单簧管的声音变成圆号的

耶鲁公开课 - 聆听音乐课程节选

So, initially they came up with four lines and then eventually five and even six, and then they went back to five by the fifteenth century.

那么,他们最初提出的是四条线,但是最终却是五条线,甚至六条线,然后在十五世纪又回到了五条线

耶鲁公开课 - 聆听音乐课程节选

By the fifteenth year chip PCs had begun their attack on the top-down computer establishment.

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The fourth Wednesday of July 2005 was the fifteenth day of a searing heat wave in the Northeast.

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Congratulations are in order for the fifteenth-seeded Eagles of Florida Gulf Coast University.

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