The Chinese word 配对 (pèiduì) is formed through the common compound word structure of verb + result complement, where the first character 配 (pèi) means "to match" or "to mate", and the second character 对 (duì) functions as a complement meaning "into a pair" or "to be a couple". Together, they create a verb meaning "to pair up", "to match into a pair", or "to couple", with 对 indicating the successful result of the 配 action, effectively describing the process and outcome of forming a matched set.