背景灰度相比其他阅读器浅了几个层次，让黑色文本在背景上有着更高的对比度。
The background gray is a few shades lighter than on any other reader, producing much better contrast behind the black text.
背景灰度相比其他阅读器浅了几个层次，让黑色文本在背景上有着更高的对比度。
The background gray is a few shades lighter than on any other reader, producing much better contrast behind the black text.
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