unain.[动]二趾树懒=unau.unaabbr.(英国)联合国协会(=United Nations Association)Una.n.尤娜(女子名)unallocated contingency未列入预算的紧急拨款,意外开支拨款unarmed explosive train未解除保险的传爆系统unaggressive individual无攻击性个人Unaccountable errors.无法解释的错误unaccusative hypothesis非直接格假设unabsolvable obligation不可免除的义务unallowable instruction非法指令unauthorized investment[经] 未经信托文件授权的投资unadulterated coffee.纯咖啡unattended surveillance无人值守监测