The purpose. The article deals with the problem of the equivalence in translation, analyzes causes of translation errors, and describes difficulties of text translation practices. Methodology and Approach. The methods of contrastive analysis, and contextual analysis, were applied during the research based on the selection of authentic English texts that are relevant, in conjunction with activities and materials that highlight specific discourse features in order to facilitate comprehension and translation of law-specific texts. Results. The work presents the analysis and description of specific features of translation, provides classification of translation mistakes. In the process of the research the author also worked out an algorithm of cross-cultural adaptation of legal texts. The role of translation in the language teaching is also reviewed as mastering a foreign language requires translation training which is impossible without knowledge of the cultural background. Theoretical and Practical implications. The author develops the theory of the cultural component of meaning detected in the course of the lexical-semantic analysis of the humanities terminological units and focuses on difficulties of interlingual legal terminology translation. The article will also be of interest to teachers of foreign language, translators and linguists, whose interests include literary translation.