Porcelain was made as early as the 9th century.

早在公元9世纪就产生了瓷器。

youdao

In the 9th century he designed a winged apparatus, roughly resembling a bird costume.

9世纪时他设计了一个有翅膀的器具，有点像鸟儿状的服装。

youdao

Found in the central Alborz Mountains of Iran, Alamut Castle was built into the rock in the 9th century.

发现于伊朗厄尔布尔士山区的阿拉穆特堡垒，9世纪由岩石建造。

youdao

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

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

For example, can today's Slovaks trace their roots to Great Moravia in the 9th century?

ECONOMIST: Slovakia's disturbing patriotism

In the 9th century, the western part of Charlemagne's empire was called France and its inhabitants French.

ECONOMIST: Letters