空白单元

例句：

1. 1. The page is blank;there's nothing written on it.
   那页是空白的，上面什么也没有写。
2. 2.She filled the notebook with blank pages.
   她用空白页填满了笔记本。
3. 3.The exam paper had a blank space for the student to write their name.
   考试卷上有一个空白处，供学生填写他们的名字。