designated ground zero的用法和樣例：
例句
- Some buldings leaned away from ground zero as though struck by a wind of stupendous proportions.
有些建筑物朝著(zhù)和地面零點(diǎn)相反的方向傾斜，好像受到暴風(fēng)襲擊一樣。 - This assumption is reasonably justified in the early stages, when the wave front is not far from ground zero.
這種假定在初期階段波陣面離地面零點(diǎn)不遠時(shí)是相當合理的。
