Doing more reading can help to enlarge one's vocabulary.

多阅读有助于扩大词汇量。

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In this paper, one aspect of vocabulary, that is word association knowledge has been proved to facilitate vocabulary retention, to enlarge one's vocabulary size.

本文讨论的是词汇的一个方面，即词汇联想义知识在词汇记忆、扩大词汇量方面的作用。

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