Sylvie could not speak. She could not tell the heron's secret and give its life away.

VOA: special.2010.04.03

He is the secret head of a large illegal gambling ring which use the computer for its operations.

他是一个秘密的，大的，非法的赌博团伙的头,那个团伙用这个电脑来操作。

哈佛公开课 - 计算机科学课程节选

"I think it's the biggest kept secret in the world because of its value. Meanwhile,secretive parts of the secret government are sitting on suppressed technology for free energy."

VOA: standard.2009.07.31