Perhaps most importantly, there is the clash between world views, where on the one hand, there is the democratic and progressive trend embodied in the venerable and still extant tradition of Arab liberalism, and on the other hand,the bloody and violent current represented by far too many of the region's seminal figures."

VOA: standard.2010.03.18

So let's talk about another periodic trend, this one is called electron affinity.

那么下面我们来讨论一下另一个周期性规律，它被称作电子亲和能。

麻省理工公开课 - 化学原理课程节选

One thing that's been a trend around the world is that the I mentioned that the U.S. Federal Reserve System was different from other central banks in that it was designed to have independence.

一个在世界范围内,流行的事实是,我提到过美国联邦储备系统,与其他中央银行不同,因为它有独立自主性。

耶鲁公开课 - 金融市场课程节选