The Chinese word 加大 (jiā dà) is a verb-object compound formed by combining the verb 加 (jiā), meaning "to add" or "to increase", with the adjective 大 (dà), meaning "big" or "large". In this construction, 加 acts as the action, and 大 serves as the object or result of that action. Therefore, the literal meaning is "to add bigness", which naturally extends to the figurative meanings of "to enlarge", "to intensify", "to step up", or "to amplify". It is a standard and logical formation in Chinese where a verb and its target are combined to create a new, specific action word.