写论文之前，你需要先查阅相关文献。

Xiě lùnwén zhīqián, nǐ xūyào xiān cháyuè xiāngguān wénxiàn.

Before writing a thesis, you need to review the relevant literature first.

这篇文献对我的研究帮助很大。

Zhè piān wénxiàn duì wǒ de yánjiū bāngzhù hěn dà.

This piece of literature was a great help to my research.

图书馆里收藏了大量珍贵的历史文献。

Túshūguǎn lǐ shōucáng le dàliàng zhēnguì de lìshǐ wénxiàn.

The library has a large collection of precious historical documents.