“服装店的试衣室”常见的英文表达是 “fitting room in a clothing store” 或更简洁的 “clothing store fitting room” 。
“fitting room” 专门指供顾客试穿衣服的房间；“clothing store” 就是“服装店”的意思 。例如：There is a mirror in the fitting room in a clothing store.（服装店的试衣室里有一面镜子 。 ）