营营声: humming sound esof an insect indistinct murmur esof many voices
电台: 1.(无线电台) transmitter-receiver; transceiver2.(广播电台) broadcasting station; radio station; radio set◇电台方位 bearing of station; 电台呼号 radio station call sign; 电台呼叫 calling-up; 电台鉴定 [讯] station a