The Chinese word "杜蕾斯" is formed as a phonetic transliteration of the brand name "Durex", with each character chosen solely for its sound: "杜" (dù) approximates "Du", "蕾" (lěi) approximates "re", and "斯" (sī) approximates "x", resulting in a term that replicates the pronunciation without deriving meaning from the individual characters.