designated ground zero

• 地面零点；爆心投影点

designated ground zero的用法和样例：

例句

1. Some buldings leaned away from ground zero as though struck by a wind of stupendous proportions.
   有些建筑物朝着和地面零点相反的方向倾斜，好像受到暴风袭击一样。
2. This assumption is reasonably justified in the early stages, when the wave front is not far from ground zero.
   这种假定在初期阶段波阵面离地面零点不远时是相当合理的。