n. a structure or object that impedes free movement
n. any condition that makes it difficult to make progress or to achieve an objective
n. anything serving to maintain separation by obstructing vision or access
n. 障碍, 栅栏
[化] 势垒; 阻片; 阻挡层
1. The language barrier made it hard for them to communicate.
语言障碍使他们沟通困难。
2. There is a barrier between the two countries that prevents easy travel.
两国之间有一道障碍，阻碍了便捷的旅行。
3. She broke through the mental barrier and achieved her goals.
她突破了心理障碍，实现了她的目标。