inexhaustible
🇺🇸
/ˌɪnɪɡˈzɔːstəbl/
🇬🇧
/ˌɪnɪɡˈzɔːstəbl/
never running out or used up; very large or limitless
The library had an inexhaustible supply of books.
图书馆拥有取之不尽的书籍供应。