书袋的英文：
book pocket

book是什么意思：
n. 书籍；著作；圣经；有内涵的事物；知识；剧本；账簿；卷，篇
adj. 从书本上学来的；账簿记载的
v. 预订；将…的姓名记在本子上；【英】预订房间 c

subsidiary book
辅助帐簿; 明细帐簿

It was a stupid book.
那是一本无聊的书。

This is the sum of this book.
这就是这本书的要点。

The book is appendixed.
那本书后面有附录。

Is this book yours?
这本书是你的吗？

pocket是什么意思：
n. 袋，口袋；钱财；小组织，小区域
v. 把…装入袋内；侵吞，盗用；（球）入球袋；隐藏，忍受
adj. 袖珍的；小型的

To pick or try to pick pockets.
扒窃或企图扒窃

He will suffer in his pocket.
他将在钱财方面有所损失。

There are pockets of ore in the mountain.
那座山里有好几块矿藏。

Money burns a hole in the pocket.
钱会把衣服口袋烧出一个洞。

His pocket was bulging with apples.
他的口袋里鼓鼓地装满了苹果。