The word "卡洛斯" (Kǎluòsī) is a phonetically formed transcription, specifically a direct transliteration of the foreign name "Carlos" into Chinese characters chosen solely for their similar pronunciation rather than their inherent meaning. Each character, 卡 (kǎ), 洛 (luò), and 斯 (sī), acts as a syllable in a phonetic borrowing system, creating a recognizable sound equivalent for a term that lacks a pre-existing conceptual translation in Chinese, a common practice for rendering foreign personal names, places, and specialized terms into the language.