他将内心的动荡隐藏在平静的外表之下。

He hid his ___inner turmoil behind a calm exterior.

莎拉似乎总是拥有一种深刻的内心平静。

Sarah always seemed to have a deep sense of ___inner peace.

她感到一种内心的需求去道歉，尽管她并没有做错什么。

She felt an ___inner need to apologize, even though she hadn't done anything wrong.