Phase One, the million and a half years ago, in the early--in the late--Miocene and early Pleistocene phases, there was shift where people were less likely to be just going out and gathering foods from every place they could find it.

第一阶段,一百五十万年前,在整个中新世以及更新世的早期,情况开始转变,人们不光靠,出门四处搜集食物

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Until that shift takes place, the global recovery will be fragile and probably quite feeble.

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This fact alone is emblematic of the tectonic shift taking place in personal computing.

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Last week, a tectonic shift took place in the firmament of the War of Ideas.

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