UNTAAn.联合国技术援助局
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
unconjugated bilirubinemia高未结合胆红素血症
unemployment insurance act失业保险法
Unmanned Recovery Platform无人操纵回收平台
uncentralized expenditures非集中性支出
unbalanced economic growth不平衡经济增长
uncoordinated eye movement不协调眼动
unformatted sequential file[计] 无格式顺序文件
unbounded spectral operator无界谱算子
uncooled infrared bolometer非制冷红外探测器
"some children remain unweaned until their second or third birthdays"