I was looking forward to a quiet evening at home.
我盼着在家过个恬静的夜晚。
I go to the library for a little peace and quiet.
我到图书馆去清静一下。
'Be quiet,' said the teacher.
“安静点！”老师说道。
Be quiet, I have something to say.
安静，我有话要说。
Be quiet or you'll wake the whole house!
安静点，别把全家人都吵醒！