This is a turning point in history.

这是历史的转变点。

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Although the telegraph has since been replaced by the even more convenient telephone, fax machine and Internet, its invention stands as a turning point in world history.

虽然电报已经被更为方便的电话、传真和因特网代替，但电报的发明成为了世界历史的一个转折点。

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The Triangle Shirtwaist Fire remains as a turning point in US history.

三角内衣厂火灾依然是美国历史的转折点。

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The way Tabanca sees it, Bullett is part of a revolution that has already become a turning point in history.

FORBES: Alek Wek Gets Down With Bullett

Our third action must be to help elevate the changes in North Africa and the Arab world from a moment in history to a turning point in history.

WHITEHOUSE: President Obama & Prime Minister Cameron Joint Press Availability | The White House

"The danger is that we could be reaching a point where nuclear weapons would become almost conventional, and there will be the possibility of a nuclear conflict at some point... that would be a turning point in human history, " he said.

BBC: Henry Kissinger