重要的是，这个手势提醒了你事有隐情。

The point is that it alerts you to something that is being withheld.

youdao

我所认识的唯一的有隐情的人便是乔治。

The only person I know who has a skeleton in the cupboard is George.

youdao

意味着：对于自己的简历有隐情，不够真实。

What it means: "I have something to hide."

youdao

But the catch is that the party on the other end of things has to have that same machine or know that same number.

但是那个隐情是对立面的党派,必须有一个同样的机器或者知道那个密钥。

哈佛公开课 - 计算机科学课程节选