국내 — Korean Beginner Vocabulary in Dialogues flashcard

interior of a country; domestic territory

꼭 필요한 책인데 도서관에도 없어서 걱정이야.

I'm worried because it's a book I really need, but it's not in the library.

국내에서 구하기 힘든 책이면 외국 인터넷 서점을 이용해 봐.

If it's a book that's hard to find domestically, try using foreign internet bookstores.