普通更衣室在英语中通常被称为 "changing room" 或 "dressing room"。这两个词都是用来描述一个用于更换衣服或脱掉衣服的房间。

关于这两个词的来源，"changing room" 一词来自于动词 "change"，意思是 "更换"。而 "dressing room" 则来自于动词 "dress"，意思是 "穿衣"。

下面是一些例句，并附上中文翻译：

Can I use the changing room to try on these clothes? (我可以使用更衣室试穿这些衣服吗？)
The dressing room is too small. Can we use a bigger one? (更衣室太小了。我们可以用一个更大的吗？)
Please don't leave your clothes in the changing room. (请不要把衣服留在更衣室里。)
I need to go to the dressing room to change into my swimsuit. (我需要去更衣室换上我的泳装。)