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mass attack 【軍事】集中攻擊。

mass balance

Bad weather could not blot out for certain or for a long period the inevitable result of massed attack on enemy communications . 惡劣的天氣并不一定能夠抵銷,或者不能長期地抵銷,對敵人的交通線實行密集襲擊所造成的必然結果。