"Two girls are in the 5A classroom" 用英语表达为 "Two girls are in Room 5A" 。
其中 "Room" 表示教室，是英语中常用的词汇。
例句：
The two girls are studying in Room 5A. (这两个女孩在5A教室里学习。)
I saw the two girls in Room 5A during lunchtime. (午餐时间我看到这两个女孩在5A教室里。)
注意：在英语中教室的编号一般是以字母开头的，例如 "5A" 。