四开纸

例句：

1. 1. This is a four-sheet of paper, please sign it here.
   这是一张四开的纸，请在上面签字。
2. 2. The printer needs a four-sheet of paper to print the report.
   打印机需要四张纸来打印报告。
3. 3. We used to use four-sheet of paper for our school notebooks.
   我们过去用四张纸来装我们的学校笔记本。