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
词态变化
复数形式:barriers
常见例句
1
n a line of defense consisting of a barrier of felled or live trees with branches (sharpened or with barbed wire entwined) pointed toward the enemy
2
a historic barrier to early westward expansion of the United States n a native or inhabitant of Appalachia
3
a barrier (usually thrown up hastily) to impede the advance of an enemy v
4
n a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc. n a barrier (usually thrown up hastily) to impede the advance of an enemy v render unsuitable for passage v prevent access to by barricading v block off with barricades
5
a penetration of a barrier such as an enemy's defense
