We should have a good command of large vocabulary.

我们应该掌握大量词汇。

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A good command of large vocabulary is prerequisite for laying a solid language foundation which is a basic guarantee of improving language communicative competence.

掌握大量的词汇是打好扎实的语言基础的必要前提，而扎实的语言基础是提高语言交际能力的根本保证。

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This article give a full account of the approach to English words memorizing will help you to get rid of your mechanical method and have a good command of English vocabulary.

本文详细阐述了英语单词记忆方法，有助于你摆脱“机械记忆”的桎梏，更好地掌握英语词汇。

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