She hid her true feelings behind a shield of cold indifference.
她把自己的真实感情掩藏在一副冷漠的`外表后面。
He hid his face in his hands.
他用手捂住了脸。
He hid behind a false identity.
他隐姓埋名。
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。