There are multiple definitions - click on the translation that matches your context.

内部的

形容词

full

inside

adjective

Definitions of inside

known or done by someone that belongs to a particular business, group, or organization; known by someone with particular knowledge about a person, business, organization, or event etc

He began buying shares in Musicland around 1998, based on inside information that the chain was about to be acquired by Best Buy.