explanatory

adj. /ɪkˈsplæn.ə.tɔːr.i/ C1

说明的；解释性的

Giving information to explain or clarify something.

仙境例句

The Gryphon added a few explanatory words, which only made the story harder to follow.

狮鹫补充了几句解释，结果故事反倒更难听懂了。