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.
这样保证从不同地方反射回来的光更容易区分开，因为他们不会变模糊一片。
This ensures that reflections from different places are easier to tell apart, because they do not blur into one another.
屈光不正是一种非常常见的眼部疾病，使眼睛无法对外界物体清晰地聚焦，而导致视力模糊，严重的时候可以引起视力损害。
It occurs when the eye cannot clearly focus the images from the outside world. The result of refractive errors is blurred vision, which is sometimes so severe that it causes visual impairment.
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