an index book 用波兰语:

1. indeks

波兰语 单词“an index book“（indeks）出现在集合中：

how to talk abouy your studies 1
How to talk about your studies?
How to talk about your studies
HOW TO TALK ABOUT YOUR STUDIES
how talk about your studies

2. książka indeksowa

波兰语 单词“an index book“（książka indeksowa）出现在集合中：

Studia english
about studies

3. książka Indeks