"So, central theme for this year's APEC discussions will be inclusive growth,".

VOA: standard.2009.11.08

We so long had this game of sort of always looking for the central theme of Southern history, the central theme of the South.

我们一直在苦苦寻找,南方,南方的历史的,中心内涵

耶鲁公开课 - 美国内战与重建课程节选

This is impressive: he dropped out of both Dartmouth and Harvard, and he did so to take laboring jobs, each time enacting a conflict between intellectual life and manual labor that would be a persistent and central theme of his poetry.

令人印象深刻的是，他从,达特茅斯学院和哈佛大学都辍学了,来劳作，每一次都在,脑力劳动和体力劳动间发生矛盾,这也是他的诗歌的核心主题。

耶鲁公开课 - 现代诗歌课程节选