documentary

adj. /ˌdɑːkjuˈmentri/ B1

文件的；文献的

Consisting of or based on official documents and records.

仙境例句

The Mock Turtle had documentary proof of his school days: an old letter from the Tortoise.

假海龟有书面证据证明他上过学：一封乌龟老师写的旧信。