Unere乌内雷UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西uncorrelated functions不相关函数unclassified reference公开参考资料unmodified epoxy resin未改性环氧树脂unconventional spirits超脱uncrossed double image非交叉二重像unbleached grass cloth原色夏布unemployment insurance失业保险uncontrolled fragments非预制破片unrecoverable reserves不可采储量unremunerative service无报酬的服务