ground zero

剑桥词典

[ 可數名詞：有複數形式的名詞 通常作爲單數使用的名詞 ]
the exact place where a nuclear bomb explodes
（核彈的）爆心投影點
The blast was felt as far as 30 miles from ground zero. 這次核爆炸在30英裡外都感覺得到。
 Ground Zero

the place where the World Trade Center stood in New York City before it was destroyed in an attack on 11 September , 2001
（燬於2001年9月11日恐怖襲擊的）紐約世界貿易中心遺址 返回 ground zero