Lipman says it is no secret that many Russians do not consider the Caucasus to be a part of the "real" Russia and prefer not to think about events there.

VOA: standard.2010.04.01

- Here, the secret is not a number 13, it's actually the build -- the diagram, the details, the gears, and the handles inside of this physical machine that constituted a secret.

这里，机密数字不是数字13，它实际上构造了-,一个图表，这个物理装置中的细节，传动装置，操纵,就构建成了一个机密。

哈佛公开课 - 计算机科学课程节选

Some Middle East analysts say it is no secret that the Gaza blockade has not significantly weakened Hamas, which Israel and the United States say is an Iranian-backed terrorist organization.

VOA: standard.2010.06.10