Chemistry was par excellence the laboratory science of the early nineteenth century.

化学是19世纪初期最杰出的实验室科学。

《牛津词典》

All four of these countries lagged considerably behind in the early nineteenth century.

这四个国家在19世纪早期都相当落后。

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In the early nineteenth century, people did mot use stamps.

十九世纪初，人们并不使用邮票。

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In the early nineteenth century steamboats came from the city of Philadelphia,Pennsylvania and from the nearby state of Delaware.

VOA: special.2009.06.01

But then if you look at the writings of New Englanders, by the early nineteenth century.

但是如果你看看十九世纪初期,新英格兰人的文章

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But it began a Critical Study of the poems for the first time and Critical Methods were applied to history for the first time ever, really, in the early nineteenth century and thereafter.

这开启了诗歌批判研究的先河,十九世纪初期,人们首次将批判理论应用于,历史文献的研究中

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It was not until the early nineteenth century, however, that horns with valves ("valve horns") were invented.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra

In the early nineteenth century the Prussian military with guidance from strategists Karl von Clausewitz established a military general staff.

FORBES: Business and Government: Different Beasts Entirely!

The center was in a big bleak house built in the early nineteenth century, isolated in a dip in the middle of the moors, beside a river.

NEWYORKER: She��s the One