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。

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Only when the reader makes a linkage between his background knowledge and the language information of the text can this communicative function be carried out.

只有当读者将自己的背景知识与语篇负载的语言文字信息联系起来以后，阅读的交际功能才得以完成。

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According to the whole process and basic condition, we know that text is base, author is reference background, reader is definite indefinite factor.

从读解的整个过程和基本情况看，文本是基础，作者是参考背景，读者是有限定的不定因素。

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