They were founded in the middle period of the Qing Dynasty.

它们诞生于清代中叶并流传至今。

youdao

The organs' relative growth rate in the middle period of incubating was faster than that of late period.

各组织器官在胚胎发育中期的相对生长强度大于后期。

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Li Huang, was a famous scholar as well as a mathematician of keen insight in the middle period of the Qing Dynasty.

李潢是清代中期著名学者，也是一位很有见地的数学家，在数学史方面很有造诣。

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Scientists say it formed when high sea levels flooded the middle of North America, splitting the continent in two for millions of years during the late Cretaceous period.

VOA: special.2010.10.05

In the Middle Ages and to some extent in the Early Modern period, we live in a theocentric world.

在中世纪甚至是现在早期，我们生活在以上帝为中心的世界里。

耶鲁公开课 - 文学理论导论课程节选

All the damage was done in the middle period when the Steelers posted six unanswered goals.

BBC: Rays get a point in Cup opener

"In the middle period with the bat we should have been a bit more clinical, " he said.

BBC: Ireland and Aussies win warm-ups

However, the young, pesky Islanders weren't deterred, and they got even with 1:24 remaining in the middle period.

WSJ: Fleury struggles in Penguins' 6-4 loss to Isles