bookjacket

例句：

1. 1. She carefully wrapped her new book in a soft bookjacket.
   她小心地用柔软的书套包裹了她的新书。
2. 2.The old books were stored in the dusty old bookjacket.
   旧书被存放在那个满是灰尘的旧书套里。
3. 3. The bookjacket was stained with coffee and must be washed soon.
   这本书套被咖啡染污了，必须很快洗掉。