網址: https://static.vecteezy.com/system/resources/previews/016/576/389/original/sf-logo-monogram-with-circle-rounded-slice-shape-design-template-free-vector.jpg
網址2: https://www.vecteezy.com/vector-art/16576389-sf-logo-monogram-with-circle-rounded-slice-shape-design-template
