| English | Russian |
| in a language | на языке (this knowledge base is written in a natural language, in a dictionary-like structure) |
| in everyday language | в повседневной речи |
| in the language of | в терминах |
| indistinguishable in the language | эквивалентный |
| indistinguishable in the language | неразличимый на языке |
| interpretation of language in set | интерпретация языка на множестве |