dial tone
名词 n.
英文释义
名词 n.
-
A telephony signal, usually in the form of a sound, used to indicate that the telephone exchange is working, has recognized an off-hook, and is ready to accept a call.
— Are we jaded? Has living with AIDS become no big deal? Has AIDS had its "15 minutes?" We're over it. Goodbye. Click. Dial tone.
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数据来源: Wiktionary