網址: https://static.vecteezy.com/system/resources/previews/010/865/352/original/blue-sky-with-clouds-horizontal-seamless-pattern-banner-endless-cloudy-texture-for-spring-background-horizon-sky-scape-of-weather-season-3d-illustration-beautiful-nature-for-summer-backdrop-vector.jpg
網址2: https://ar.inspiredpencil.com/pictures-2023/seamless-sky-pattern
