吃透英语课本，提升在校竞争力
n. 障碍；妨碍；闭塞；违例阻挡
复数：obstructions
an operation to remove an obstruction from her throat
去除她喉咙里阻塞物的手术
Police can remove a vehicle that is causing an obstruction.
警察有权把造成阻塞的车辆移走。
John was irritated by drivers parking near his house and causing an obstruction.
约翰被众司机在他房子附近停车而造成阻塞所激怒。
intestinal obstruction
肠梗阻
obstruction of justice
妨碍司法公正；阻碍司法
n.障碍；[化学]阻碍；妨碍
intervention
prevention
let
bar
dam
