各地都说英语的原因是，在19世纪，英语成为了世界贸易用语。

The reason why English is spoken everywhere is that in the nineteenth century, English became the language of world trade.

这位诗人诞生于19世纪。

The poet was born in the 19th century.

印象派在19世纪末期兴起。

Impressionism emerged in the late 19th century.

19世纪是工业革命的时代。

The 19th century was the era of the Industrial Revolution.

以太理论在19世纪非常流行。

The theory of ether was very popular in the 19th century.

俾斯麦在19世纪统一了德国。

Bismarck unified Germany in the 19th century.

汽船是19世纪工程学的奇迹。

The steamship was a marvel of engineering in the 19th century.

钍的发现可以追溯到19世纪初。

The discovery of thorium dates back to the early 19th century.

王尔德是19世纪末的著名作家。

Wilde was a famous writer in the late 19th century.

磁阻现象首次在19世纪被发现。

The phenomenon of magnetoresistance was first discovered in the 19th century.