十四世纪是一个人类文明发生重大转折的年代。

Fourteenth century is the age of a major turning point in human civilization.

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从本世纪初开始，西方的国家干预已经经历了两次重大转折。

From the beginning of this century, state interference in western countries has gone through two significant transitions.

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英国历史进程的重大转折之一,就是在英国南北部之间的,经济活力的改变

One of the great shifts in English/British history that you will become aware of is the shift of economic dynamism in England away from the south to the north.

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One of the great shifts in English/British history that you will become aware of is the shift of economic dynamism in England away from the south to the north.

英国历史进程的重大转折之一,就是在英国南北部之间的,经济活力的改变

耶鲁公开课 - 欧洲文明课程节选

So, that was one of the biggest, one of the biggest, uh, forces for change. It was my experience living in Italy.

可以说，我在意大利的经历是促成我人生转折点的重大因素之一。

换专业的理由 - SpeakingMax英语口语达人