Some want an independent review. And the trial's researchers, like Dr.Nelson Michael, of the Walter Reed Institute of Research in the United States, say it's unclear what difference the findings will make for areas like Africa where rates of HIV/AIDS are much higher than among the test population and where there are many strains of the virus.

VOA: standard.2009.10.20

Now be honest, how many of you in a blind taste test can taste the difference between ordinary Coke and ordinary Pepsi?

老老实实,你们谁能在不知道的情况下尝出,可口可乐和百事可乐的不同

耶鲁公开课 - 博弈论课程节选

I want to talk a little bit about an individual difference in our social natures and then I want people to do a test that will explore where you stand on a continuum.

今天我要讲的个体差异,是属于社会性的，我会让你们做一个测试,来弄清楚你们在这个测试中处于什么位置。

耶鲁公开课 - 心理学导论课程节选

And what we did was he put two detection plates on either side of these cathode rays, and when he put a voltage difference between these two plates, he wanted to see if he could actually bend the rays and test if they're actually charged or not.

但没有实验证明这件事,这就是Thomson所做的，它在阴极射线旁边放两块探测板,他想通过看当他,在两板之间加上电压后,阴极射线是不是会。

麻省理工公开课 - 化学原理课程节选