An operator wearing earphone was sitting in the telephone exchange.
戴耳机的接线员正坐在总机室里。


词
;
, 麦克风;
, 扬声
, 喇叭;
;
;An operator wearing earphone was sitting in the telephone exchange.
戴耳机的接线员正坐在总机室里。
声明:以上例
、词
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