Ungap不隔UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unconventional mode of thinking非常规思维方式unconditioned orientaing reflex[医] 非条件朝向反射Unrepeatable bargains/offers仅此一次的大减价.unbalanced development strategy非均衡发展战略unmanned ground mobile platform无人地面机动平台Unframed painting is selling.无帧画出售。UN anti-terrorism conventions联合国反恐规约un-equalizing economic system非均衡经济制度unconfined compression strength无侧限抗压强度undisturbed Newtonian viscosity未扰动的牛顿粘度