dial tone
noun [ C usually singular ] US uk/ˈdaɪ.əl ˌtəʊn/ us/ˈdaɪ.əl ˌtoʊn/ (UK dialling tone)
（电话）拨号音
a continuous sound that tells you that a phone is connected to the phone system and is ready to be used
| 单词 | dial tone |
| 释义 | dial tone noun [ C usually singular ] US uk/ˈdaɪ.əl ˌtəʊn/ us/ˈdaɪ.əl ˌtoʊn/ (UK dialling tone) （电话）拨号音 a continuous sound that tells you that a phone is connected to the phone system and is ready to be used |
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