unus一UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西uncommercial call非商用通话Unlevelness index不均匀性指数unexploited stock未开发鱼群unreinforced seal无骨架密封unticomplementary抗补体的unnumbered format无编号格式unbounded network无边界网络unboosted missile无助推器的导弹unregistered word未登录词uncontrolled line非控制线路