The word "亚伦" is formed through a process of phonetic transliteration, specifically to represent the sound of the foreign name "Aaron". It is created by selecting two pre-existing Chinese characters, "亚" (yà) and "伦" (lún), whose combined pronunciation closely approximates the English syllables. This is a standard method in Chinese for adopting foreign proper nouns, where meaning of the individual characters is typically disregarded in favor of their sound, resulting in a purely phonetic construct for a name.