shelf nog

例句：

1. 1.She placed her books on the bookshelf.
   她把书放在书架上。
2. 2.The bookshelf was filled with old books.
   书架上摆满了旧书。
3. 3.I need to find a new bookshelf for my collection.
   我需要为我的收藏找一个新书架。