The word "阳光明媚" is formed by combining the compound "阳光", meaning sunlight, which consists of "阳" (sun) and "光" (light), with the compound "明媚", meaning bright and beautiful, which consists of "明" (bright) and "媚" (charming or beautiful); together, they create a descriptive phrase that literally denotes sunlight as bright and charming, typically referring to sunny weather.