barrier
Definition
A physical or symbolic obstruction that blocks movement or progress.
中文 一种物理或象征性的障碍，阻碍运动或进步。
Example
"The Great Wall served as a barrier against invasions."
A physical or symbolic obstruction that blocks movement or progress.
中文 一种物理或象征性的障碍，阻碍运动或进步。
"The Great Wall served as a barrier against invasions."