无 + 障碍 / 障碍 + Noun
障碍 (zhàng'ài) is a noun meaning "obstacle," "barrier," or "hindrance." It can refer to physical obstructions or abstract difficulties. For example, 无障碍 means "barrier-free" or "accessible."
语言障碍让他在国外生活很不方便。
Yǔyán zhàng'ài ràng tā zài guówài shēnghuó hěn bù fāngbiàn.
The language barrier makes his life abroad very inconvenient.
我们要消除沟通中的障碍。
Wǒmen yào xiāochú gōutōng zhōng de zhàng'ài.
We need to eliminate barriers in communication.
这栋大楼有无障碍通道,轮椅可以直接进去。
Zhè dòng dàlóu yǒu wú zhàng'ài tōngdào, lúnyǐ kěyǐ zhíjiē jìnqù.
This building has a barrier-free passageway, so wheelchairs can go directly in.