21世纪初，领导教育学专业博士点的设置，标志着领导教育学作为一门学科的诞生。

At the beginning of 21st century, the professional establishment of doctoral empowerment of leadership pedagogy indicated the birth of leadership pedagogy as a discipline.

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中国歌剧自二十世纪初在中国诞生以来，成为中国文艺舞台上一个重要的艺术表演形式。

Since the birth of Chinese opera in the early part of the 20th century, it has become an important aspect of Chinese performing arts.

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火车诞生于十九世纪初，其特点是快速，廉价， 特别适合陆上货物运输以及旅客长途旅行。

The train was invented in the early nineteenth century. It is fast in speed and low in price, especially suitable for the transportation of goods and long-distance passenger travel.

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