你的背景图层清晰锐利，顶部图层模糊。
Your background layer is nice and sharp. Your top layer blurry.
有些设置可以让字母的边缘模糊平滑，另一些则会使字母边缘清晰锐利。
Some like their edges to be smooth and blurred on each letter on the screen. Others like sharp fonts where the edges are crisp and clear.
在高分辨率的显示器上，包含这些图片资源会使应用界面更加清晰锐利。
Including such image resources makes your app's graphics look even sharper and crisper on those higher-resolution screens.
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