That is why author and illustrator Rosalyn Schanzer chose to write the children's book "What Darwin Saw: The Journey that Changed the World."

VOA: special.2009.02.27

That's what has changed between these two positions.

这就是在这两个位置间所发生的变化。

耶鲁公开课 - 文学理论导论课程节选

Khamenei asked Mr.Obama if what he called America's "hostility" towards the Iranian nation has really changed.

VOA: standard.2009.03.21

Steve Tripoli from MARKETPLACE joins us now to tell us what's happened, and Steve, what's changed, what's happened?

NPR: Marketplace Report: Wolfowitz's Anti-Corruption Plan

It's extraordinary what's changed in the last six weeks.

NPR: The Politics of U.S. Troop Levels in Iraq

"We had an opportunity to get a fairly in-depth intelligence assessment on what's going on in Afghanistan and Pakistan, and to assess individually where we are in each and what's changed since March" when the president decided to send an additional 21, 000 troops, Gibbs said.

CNN: Gates leaning towards more troops for Afghanistan, sources say