| 单词 | ground zero |
| 释义 | ground zero 1 ENTRIES FOUND: ground zero noun ground zero noun Learner's definition of GROUND ZERO [noncount] 1 : the point on the earth's surface directly above, below, or at which an explosion (especially a nuclear explosion) occurs(尤指核弹的)爆心投影点,地面零点 2 : the central point in an area of fast change or intense activity(某区域发生快速变化或剧烈活动的)中心点
3 : the beginning state or starting point起始点;开始状态
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