She felt sure the letter had some hidden meaning.
她确信那封信中有言外之意。
There are fears of a hidden agenda behind this new proposal.
人们担心这一新提议的背后有不可告人的目的。
I stayed hidden; I couldn't chance coming out.
我躲了起来，不能冒险出去。
He knew the hidden drifts in that part of the river.
他对那段河道中的'暗流非常清楚。
I keep my private papers hidden.
我藏起了我的私人文件。