阅读小说有助于扩大你的词汇量。

Reading novels helps expand your ___vocabulary.

学习新领域时，掌握专业词汇很重要。

When learning a new field, it's important to master its specific ___vocabulary.

这本字典后面有一个常用词汇表。

There is a common ___vocabulary list at the back of this dictionary.