... dialling tone 拨号音 Voice Dialling 语音拨叫 ; 语音拨号 frequency dialling 双频拨号 ; 复合信号多频拨号 ...
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dialling g tone 拨号音
N-COUNT The dialling tone is the noise which you hear when you pick up a telephone receiver and which means that you can dial the number you want. 拨号音
It was only as she tried for the second time that she realized that there was no dialling tone.
当她第二次拨号时，才意识到没有拨号音。
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