2 sentences

1. 我需要扩大我的词汇量。

   wǒ xū​yào kuò​dà wǒ​de cí​huì​liàng.

   I need to expand my vocabulary.

   Source: CCMatrix

2. 阅读可以帮助增加词汇量。

   yuè​dú kě​yǐ bāng​zhù zēng​jiā cí​huì​liàng.

   Reading can help to increase vocabulary.

   Source: CCMatrix