| 单词 | 数量减少 |
| 释义 | 〔builddown〕A systematic numerical reduction, especially of nuclear weapons, in which more than one weapon or warhead is destroyed for every new one that is built.衰减，降低：有系统的数量减少，尤指核武器，当每一个新的核武器被造出来后，一种或更多的武器或弹头就要销毁 |
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