defencesn.防御工事名词defence的复数形式.=defenses.defencen.防御；答辩；防务Defence Diversification Agency国防科技多元化推广总署defence/prosecuting counsel被告/原告的律师Defence Research Establishment国防研究所Defence Packet Switched Network国防信息包转换网defence of tender before action诉讼前已得出要求清偿的答复Defence Message Transfer System国防文电传输系统Defence Diversification Council国防科技多样化推广署defenceless animals/children没有自卫能力的动物/孩子Defence Co-Operation Agreement防务合作协议defence against chemical weapons化学武器的防御, 防化