But analyst Kamran Bokhari, of the private intelligence firm Stratfor, says there is a crucial difference between playing the tribal card in Iraq and trying the same thing in Afghanistan.

VOA: standard.2009.03.11

Same distance, same eye chart, the only difference being they're sitting in a flight simulator and they were wearing pilot overalls.

相同的距离，相同的视力表，唯一的不同是，他们坐在,飞行模拟器里，穿着飞行服。

哈佛公开课 - 幸福课课程节选

I can give you the form and ask you to rate how attractive you think I am and I can give you the same instruction with a crucial difference "Please wait here.

我给你们这张表格,对我的魅力指数打分,同样的指示，但有一点重要的差别,我对你们说“请在这儿稍等片刻。

耶鲁公开课 - 心理学导论课程节选