Unbei耘平(名,日本)UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unreduced egg cell不减数卵细胞uncontrolled drive未蝶驱动unmatched socks.没有配成双的短袜untwisting protein解旋蛋白unbridled ambition无穷的欲望unborn beneficiary尚未出生的受益人undirected network无向网络uncoupling protein解偶联蛋白uncorrelated count不相关计数unbalance in trade贸易不平衡