He used many notional words in his writing.

他在写作中使用了很多实词。

Learning a language requires mastering notional words.

学习语言时，掌握实词很关键。

Nouns, verbs, adjectives, and adverbs are all notional words.

名词、动词、形容词和副词都是实词。

Notional words in a sentence are usually more important than function words.

句子中的实词通常比虚词更重要。

Morphology comprises notional words and function words.

词法部分包括实词和虚词.

Secondly, according to the size of the PCR, these notional words are put in order.

将各实词按照优先组合关系大小进行排列；