Unat托拉塞米[利尿药]
unaabbr.(英国)联合国协会(=United Nations Association)Una.n.尤娜(女子名)
Unavoidably absent/delayed不得已而缺席[耽搁
unallowable combination check非法组合检验
unassignable letter of credit不可转让的信用证
unamortized issuance discount[经] 未摊还发行的折价(或溢价)
unascertained rational number未确知有理数
unallowable instruction check非法指令检验
unapplied expenses allocation[经] 未分配费用的分摊
unaccustomed to such kindness对那样的好意感到不习惯
"he was secure that nothing will be held against him"