One reporter for the New York Times observed that the change from President Herbert Hoover to Franklin Roosevelt was like a man moving from a slow horse to an airplane.

VOA: special.2011.03.24

PROFESSOR BAWENDI: So, for an ideal gas, the isothermal is the easy one because the energy doesn't change.

对理想气体，等温过程最简单,因为能量不变。

麻省理工公开课 - 热力学与动力学课程节选

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

One resolution was approved a declaration calling for concerted global action on climate change ahead of a major United Nations conference on the subject scheduled for December in Copenhagen.

VOA: standard.2009.10.17

(NO TRANSCRIPTS) In 2008,Kennedy saw an agent of change in Senator Barack Obama and became one of the first prominent Democrats to endorse Obama's bid for the party's nomination for president.

VOA: standard.2009.08.26