卧室用室用英语是 "bedroom"。

这个词来源于英语单词 "bedroom"，它由两个词组成："bedroom" 和 "room"。"Bedroom" 是指房间里有床的房间，而 "room" 是指房间。

下面是一些英文例句及其中文翻译：

I'm going to clean the bedrooms. (我要打扫卧室。)
How many bedrooms does this house have? (这幢房子有几个卧室？)
I'm going to paint the walls in the bedroom. (我要给卧室的墙涂漆。)
I need to buy some new furniture for the bedroom. (我需要为卧室买一些新家具。)