It's the vocabulary, it's the complexity of the thought, and so on that makes it difficult. Iser acknowledges this.

是词汇，思想的复杂性等等,使它变得难懂，伊瑟尔承认这一点。

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But now, take a more complicated language-- same vocabulary, the same three nouns, the same two verbs, the same sentence, but now one other sentence.

但现在,我们来说一种更加复杂的语言,同样的词汇,同样的三个名词,同样的两个动词,同样的句子,但现在却多了另一个句子

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