CIA veteran Paul Pillar, who is now a professor of security studies at Georgetown University, says public opinion in Afghanistan is already eroding.

VOA: standard.2009.10.21

In fact, there is a pillar there of high purity zinc that stood for the duration.

事实上，那有一个高纯度锌的柱子,存在于整个时期。

麻省理工公开课 - 固态化学导论课程节选

Mr.Hatoyama said Tokyo's relationship with the United States will be a "key pillar" of his policies.

VOA: standard.2009.09.23

Paul Pillar at Georgetown University says if it is not war, then the Obama administration needs to spell out the exact nature of the struggle.

VOA: standard.2010.01.19

Corn,which is also called maize, is the other pillar of American agriculture.

VOA: standard.2010.02.01

Paul Pillar,a former senior CIA intelligence officer now with Georgetown University's School of Foreign Service, favors a shift away from direct combat operations to a concentration on training Afghanistan's army and police, and economic development.

VOA: standard.2009.10.15

"We've heard the words he spoke on behalf of the world's number one democracy, he said - we've been waiting for these words for a long and he should know that the has friends and that Europe will from now on be an even stronger pillar that he can count on,".

VOA: standard.2009.04.04