玻璃体出血表现为视物模糊和畏光，患者主诉视野中出现阴影，漂浮物，烟雾，蛛网或线条。
Vitreous hemorrhages present as hazy vision and photophobia with the perception of shadows, floaters, smoke signals, cobwebs, or lines in the visual field.
盒阴影的结构和text - shadow相同，x轴偏移，y轴偏移，模糊，颜色。
The structure for box shadow is same as the text-shadow property: x-offset, y-offset, blur, and color.
其中一章展示了各种静态特效，比如模糊（用来在显示弹窗的时候弱化背景对注意力的干扰）、阴影、反光和高光。
Various static effects are demonstrated, such as blurs (for making backgrounds less distracting when popups are visible), drop shadows, reflections and highlights.
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