Unbi云飞(姓,日本)UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西Unwed parents .未婚父母。 .；。unconfirmed L-C非保兑信用证unprovoked attack无缘无故的攻击unbalancing force激振力uncommunicabilityn.不能传达undistorted image无失真图象unperturbed orbit未扰动轨道uncharged surface不带电表面unhydrogen-likeadj.非氢状的；非类氢的unexplained error未经解释的错误