n. any structure that makes progress difficult
n. the physical condition of blocking or filling a passage with an obstruction
n. the act of obstructing
n. getting in someone's way
n. 障碍, 妨碍, 闭塞物
[医] 梗阻, 不通
1. The construction work caused an obstruction on the road.
建筑工程导致了道路上的障碍。
2. His tall figure was an obstruction to my view of the stage.
他高大的身影挡住了我看舞台的视线。
3. We need to clear the obstruction in the pipeline to restore water flow.
我们需要清除管道中的障碍，以恢复水流。