So he came up with the ideas that led to the idea of Lewis structures in the very early 1900's.

他就提出了这个想法,进而发展出了路易斯结构在二十世纪初。

麻省理工公开课 - 化学原理课程节选

That civilization was uncovered by the archaeologists right at the beginning of the twentieth century.

考古学家在二十世纪初首次发现了,拥有该特征的文明

耶鲁公开课 - 古希腊历史简介课程节选

Now the master of syncopation, of course, in music was Scott Joplin, African American composer writing a lot around the area of St. Louis in the turn of the twentieth century.

说到使用切分音的大师,我们自然想到斯考特·乔普林,是位多产的美国黑人作曲家,二十世纪初居住在圣路易斯地区

耶鲁公开课 - 聆听音乐课程节选

So Levenson, who draws actually on long-standing work by other scholars, and earlier in the twentieth century even , Levenson finds several of the main elements of the Hittite suzerainty treaties in this speech.

所以Levenson凭借其他学者，甚至是二十世纪初的学者的作品，发现了在这段演说中,有几个存在在Hittite领主条约的主要元素。

耶鲁公开课 - 旧约导论课程节选