quiet意思是「安靜的、平靜的"，mouse意思是「老鼠」。老鼠向來是躡手躡腳地走路，不容易被人發現，西方人以此來形容安靜的人或者場面。
看看老外聊天時怎麼用quiet as a mouse：
A It is wonderful to live in Hualien.The night in the village is quiet as a mouse B Yes，I slept really well during three-day trip to Hualien.
A住在花蓮真的是一件很美好的事，夜晚的鄉村十分的安靜
B是啊，在那三天的旅行中，我都睡得非常好。
quiet as a mouse例句精選：
Do you think Jimmy is sick? He's been quiet as a mouse all day long.
你看吉米是不是病了？他一整天都是安安靜靜的。
She was as quiet as a mouse. I didn't even know she ′ d come in.
她不聲不響，我一點兒也不知道她進來了。
I sat as quiet as a mouse and listened to his story.
我靜悄悄地坐著，聽他講故事。
She was as quiet as a mouse that nobody noticed her presence.
她不聲不響，以至於沒人意識到她也在場。
和mouse有關的一些習語，一起來看下吧：
word of mouse電腦郵件散播的訊息
A lot of rumors are spread by words of mouse.
很多流言都是透過電腦郵件散布出的訊息。
He's as poor as a church mouse.超級窮。
People in this country are all poor as a church mouse，but the King is still live in a wealthy life.
這個國家的人民非常窮困，但是國王卻一直過著富裕的生活。