话务员中继电路话务员中继线operator: n. 1.操作者,机务员;司机,驾驶员;【军事】电话兵; ...trunk: n. 1.树干 (opp. branch); 躯干,身躯 ...trunk operator: 长途话务员; 市外话务圆operator trunk dialing: 话务员长途拨号方式trunk operator dialing: 长途话务员拨号下载手机词典可随时随地查词查翻译