retrieval by header

例句：

1. 1. The company is using a new retrieval system to improve its efficiency.
   该公司正在使用一种新的检索系统来提高效率。
2. 2.The scientist used the retrieval method to recover the lost data.
   科学家使用了这种检索方法来恢复丢失的数据。
3. 3.The retrieval process involves a lot of manual work and requires careful attention to detail.
   检索过程需要大量的手工工作，并且需要仔细关注细节。