dial tone
US /ˈdaɪəl ˌtoʊn/
UK /ˈdaɪəl ˌtəʊn/
名词
拨号音
a continuous sound heard on a telephone when you pick it up, indicating that you can dial a number
示例:
•
I picked up the phone, but there was no dial tone.
我拿起电话，但没有拨号音。
•
You need to wait for the dial tone before you can make a call.
在拨打电话之前，你需要等待拨号音。