备有龙骨的

例句：

1. 1. She shared a dormitory with her roommate during the summer vacation.
   暑假期间，她和室友合租了一个宿舍。
2. 2. The dormitory was always full of students studying for exams.
   宿舍总是挤满了准备考试的学生。
3. 3. He moved into a new dormitory last month and hasn't settled in yet.
   他上个月搬进了新宿舍，还没适应。