The word "来源于" is a verb phrase formed through a logical and common grammatical structure in Chinese. It combines the noun "来源" (láiyuán), meaning "source" or "origin," with the preposition "于" (yú), which here means "from" or "in." When joined, the phrase functions as a verb meaning "to originate from," "to stem from," or "to derive from," where "于" introduces the specific origin or starting point of something, effectively creating a dynamic phrase that describes the act of provenance. This construction is widely used in both formal and everyday language to trace the basis or root of an idea, object, or phenomenon.