UNCCD联合国防治荒漠化公约
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
unbridled enthusiasm无限的热情
untranslated storage不转换存储器,非转换存储
unexplained variance不可解释的变异数
unconventional usage非常规用法
undispersed concrete不分散混凝土
unborn inventions.未来的发明
un-loading fissure卸荷张裂缝
uncontrolled storage无控制蓄水
"an uncaring person"
"the thoughtless saying of a great princess on being informed that the people had no bread; `Let them eat cake'"