In this article, in the process of translation, the existence of lexicons that cannot be translated from any language to a foreign language with one word, and such words are mainly local people's money, units of measurement representing distance and length, household items, clothing It is explained in detail that it is made up of words meaning concepts such as -night, food and drink, problems arise in finding an alternative to these words in translation, and then there is always a lacuna phenomenon in translation. The opinions of scientists about the lacuna are examined through examples, and the article discusses the language units with a national color that have encountered the phenomenon of lacuna in the translations of Abdulla Qadiri's novel "The Past Days" into English by Carol Yermakova and Mark Reese. In conclusion, a list of words in the translation of the novel that are difficult to translate from Uzbek to English is formed in the form of a table.