观察图片。回答下列问题

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                                                                                                                     一 鹭 图
                                                                                                                     刘羽（明）
                                                                                                芳草垂杨荫碧流，雪衣公子立芳洲。
                                                                                                一生清意无人识，独向斜阳叹白头。