内部 + 的 + Noun
内部 means "inside" or "internal," referring to the inner part of an organization, system, or space. It is often used as an attributive modifier before a noun with 的. Use it to describe things that are not public-facing, such as internal meetings or internal documents.
这是公司内部的文件,不能外传。
Zhè shì gōngsī nèibù de wénjiàn, bù néng wàichuán.
This is an internal company document and must not be shared outside.
内部会议的内容暂时保密。
Nèibù huìyì de nèiróng zànshí bǎomì.
The content of the internal meeting is temporarily confidential.
这栋楼的内部装修非常漂亮。
Zhè dòng lóu de nèibù zhuāngxiū fēicháng piàoliang.
The interior decoration of this building is very beautiful.