ream

例句：

1. 1. She used the ream of paper to write a letter.
   她用一卷纸写了一封信。
2. 2. The printer had a ream of paper left over from the previous job.
   打印机剩下了一卷纸，是前一个工作剩下的。
3. 3. He reamed the wood for the shelves.
   他给书架上锯了木料。