U.S.officials have long said they believe al-Qaida leader Osama bin Laden and his top commanders shifted their base of operation from Afghanistan to Pakistan's largely autonomous tribal regions after coalition forces invaded Afghanistan in 2001.

VOA: standard.2009.10.30

Who knows? Maybe we'll try on some other occasion, but for the moment I think you can see that in making remarks of this kind about a text one has shifted the attention from meaning to structure.

我们也许会在以后讲到它，谁知道呢，但是我想你们应该已经看出来,我们的重点已经从内容,转移到了形式。

耶鲁公开课 - 文学理论导论课程节选

Carbohydrate has really shifted, and so people are eating more calories from carbohydrate before, sugars primarily, and that is coming primarily from added sugar, or that's at least one of the primary contributors.

碳水化合物也有明显的变化,比前人更多的从碳水化合物中摄取热量,以糖类为主,也就是说主要是添加糖类的食物,至少这是主要的来源之一

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选