The 20th century witnessed numerous significant events.

20世纪见证了众多重大事件。

This is the nineteenth century.

这是第十九世纪。

Angkor was the capital of the Khmer Empire from the 9th century until the 15th century.

吴哥是高棉帝国从9世纪到15世纪的都城。

In the next century, we aim to achieve sustainable development.

在下一个世纪，我们的目标是实现可持续发展。

The twentieth century saw many technological advancements.

二十世纪见证了众多科技的进步。

This church was built a century ago.

这座教堂已经有一百年的历史了。

During the 19th century, locomotives revolutionized transportation.

19世纪，机车彻底改变了交通运输方式。

The courthouse was built in the 19th century.

这座法院建于19世纪。

The capital ship was launched a century ago.

这艘大船在一个世纪前下水。

The vintage store sells authentic 19th-century bloomers.

那家古董店出售真正的19世纪复古花边灯笼裤。