n.三角墙；山形墙
The pediment's triangular wall surface, or tympanum, was often decorated with sculpture. 山形墙的三角形壁面，即山形墙壁面，常有雕刻装饰。
开发障碍
n.障碍；阻碍；口吃
n.妨碍行进的重负；累赘
