dialling tone

英 [ˈdaɪəlɪŋ təʊn] 美 [ˈdaɪəlɪŋ toʊn]

n.  (电话的)拨号音



牛津词典

noun

  1. (电话的)拨号音
    the sound that you hear when you pick up a telephone that means you can make a call

    柯林斯词典

    1. (电话的)拨号音
      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.
      1. in AM, use 美国英语用 dial tone