Unas乌纳斯unaabbr.(英国)联合国协会(=United Nations Association)Una.n.尤娜(女子名)unauthorized killing擅自杀人unascertained system未确知系统Unadorned Flecatchern.素色斑翅霸鹟unaseertained theory未确知理论unaerobics endurance无氧耐力unauthorized worship淫祠unaligned nations.不结盟国家unacclimatized edema不服水土肿unattended recording无人的录音unauthorized changes未经同意的变更