buckstaves

例句：

1. 1. I found a buckstave on the floor and decided to use it as a bookmark.
   我在地板上发现了一个书签，决定把它作为书签使用。
2. 2.The student used a buckstave to mark his notes during class.
   这位学生在课堂上用一个书签标记了他的笔记。
3. 3. She saved her favorite book by using a buckstave to mark the pages she wanted to read.
   她通过使用一个书签来标记她想要阅读的页面来保存她的最爱的书。