1 sentence

1. 我们需要定期备份资料库以防数据丢失。

   wǒ​men xū​yào dìng​qī bèi​fèn zī​liào​kù yǐ​fáng shù​jù diū​shī.

   We need to back up the database regularly to prevent data loss.

   Source: Dong Chinese Dictionary