Nonnen农嫩nonadv.[拉]非；不是nonuniform sediment非均匀沙nonviolent doctrine非暴力主义non-issuable plea无须置答之抗辩non-return policy不返回策略non-translational非平移的nondirected therapy非指导性疗法,非直接疗法nonweight-bearing非承重的non-transpar ency不透明, 不透光性, 不透彻non-swimmers'poolnonviral retroposon非病毒样反转录转座子