dial tone
US /ˈdaɪəl ˌtoʊn/
UK /ˈdaɪəl ˌtəʊn/
名詞
撥號音
a continuous sound heard on a telephone when you pick it up, indicating that you can dial a number
範例:
•
I picked up the phone, but there was no dial tone.
我拿起電話，但沒有撥號音。
•
You need to wait for the dial tone before you can make a call.
在撥打電話之前，你需要等待撥號音。