Noun + 的 + 外部
外部 (wàibù) means "exterior," "outside," or "external part" and refers to the outer portion or surface of something. It is used to distinguish between the inner and outer aspects of objects, organizations, or systems.
这栋建筑的外部看起来很旧,里面却很现代。
zhè dòng jiànzhù de wàibù kàn qǐlái hěn jiù, lǐmiàn què hěn xiàndài.
The exterior of this building looks very old, but the inside is very modern.
公司正在应对来自外部的竞争压力。
gōngsī zhèngzài yìngduì láizì wàibù de jìngzhēng yālì.
The company is dealing with competitive pressure from outside.
手机外部有一层保护壳,不容易摔坏。
shǒujī wàibù yǒu yī céng bǎohù ké, bù róngyì shuāi huài.
The phone has a protective case on the outside, so it's not easy to break from dropping.