The Tea Party movement, which takes its name from a significant American Revolutionary War event, played a significant role in drumming up grassroots opposition to President Barack Obama's health care reform plan and in raising concerns about the country's growing budget deficit.

VOA: standard.2010.02.09

Another significant finding Piaget had about this phase of development concerns what's called "conservation."

皮亚杰在该发展阶段中的另一个重大发现,就是"守恒"

耶鲁公开课 - 心理学导论课程节选

"President Obama, based on an earlier story,had asked that the national security team gather further information on his background, including concerns that he might have been involved the deaths of a significant number of Taliban prisoners of war a few years ago.

VOA: standard.2009.08.17