touch-tone的用法和樣例：
詞匯搭配
- touch-tone phone 按鍵式電話(huà)
- touch tone 按鍵音雙音多頻撥號音...
- touch tone dialing 按鈕式音頻撥號...
- touch tone receiver 按鍵音接收器...
- touch tone telephone 按鍵式電話(huà)機...
- touch tone telephone set 按鍵式電話(huà)機...
- touch tone adapter 雙音多頻撥號音轉換器...
- touch tone data service 按鍵式數據服務(wù)...
- touch tone signal 雙音雙頻信號...
- touch tone signaling 雙音雙頻音信號方式...
- touch tone dial 按鍵音撥號器...
