十九世纪中叶，第一批商业石笼编织网出现了。

In the middle of the nineteenth Century, the first batch of commercial stone cage weaving nets.

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在我国历史分期上泛指十九世纪中叶以前的时代。

In our history, staging refers to the era before the mid-nineteenth century.

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十九世纪中叶以前，武术的健身理论主要来源于中医理论。

Before the middle of the eighteenth century, the theories of Wushu were mainly from the traditional Chinese medicine.

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When you get to say the middle of the nineteenth century and the work of the great English historian of Ancient Greece, George Grote, he begins his story in 776 with the Olympic Games.

十九世纪中叶,有一位研究古希腊的,伟大英国历史学家乔治·格罗特,他从公元776年的奥运会开始执笔

耶鲁公开课 - 古希腊历史简介课程节选