This research provided a comprehensive linguistic analysis of translation practices applied to two articles on "Advances in Nuclear Fusion and Its Application," employing Halliday's Systemic Functional Linguistics (SFL) as the primary analytical framework. The study meticulously examined the contextual, grammatical, and cohesion aspects of the English source text from The Guardian and its Vietnamese counterpart from VietnamNet. Through comparative analysis, the study identified key linguistic phenomena, translation challenges, and strategic decisions made during the translation process. This research contributes to the field by offering insights into the complexities of translating scientific and technical content between English and Vietnamese, highlighting the role of the SFL in achieving accurate and contextually appropriate translations.