带有空白页和螺旋的日历模型。桌面垂直纸日历模型正面和侧面视图隔离在白色背景上。议程，年历模板。逼真的 3D 插图，套装
Calendar mockup with blank pages and spiral. desktop vertical paper calender mock up front and side view isolated on white background. agenda, almanac template. realistic 3d illustration, set
