uncapv.脱掉帽子；打开盖UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西undisturbed soil column磨碎土Unlatch the elevator.开吊卡。uncutting wiping towels连匹抹布untargetted mutagenesis非目标诱变un-symmetrical change非对称化unpremeditated homicide非预谋杀人； 过去杀人uncoupling lever hanger车钩提杆吊unchoked running system开放式浇注系统undisturbed water level未扰动水面unenviable notoriety.不值得羡慕的恶名声。