龙须糖指的是安徽省安庆市的特产，因其外观洁白绵密、细如龙须而得名，而且大多数的游客来这里旅游的话龙须糖是必带的特产，龙须糖也是中国民间特色传统小吃，因此一直非常受到广大消费者的喜爱。
I want to draw an image that would effectively be a circular progress indicator on a UIButton. Because t开发者_如何学Che image is supposed to represent progress of a task, I do not think I should hand
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