If something is ~, it is very strong and cannot be destroyed.
This type of plastic is almost ~.
ADJ
If something is ~, it is very strong and cannot be destroyed.
This type of plastic is almost ~.
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012