Ungun温贡UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unclassified technical order一般性技术规程undetected error probability漏检误差概率UN nuclear monitoring agency联合国原子能监督机构uncorrected retention volume未校正保留体积undecatungstogalloindic acid11-钨镓合铟酸unbalanced voltage condition电压不平衡unblushing obsequiousness.不知害臊的阿谀逢迎unharmonious labor relations不和谐劳动关系undecided conductor boundary待定边界条件导体unfavorable balance of trade入超,贸易入超,贸易逆差

1. You must start by unlearning all the bad habits your previous piano teacher taught you!
   你得先改掉以前钢琴老师教给你的一切坏习惯！
2. The poem is obscure to those unlearned in the classics.
   这首诗在不懂古典诗作的人看来是费解的。
3. Our sales director is unlearned.
   我们的销售部主任没有文化。