- of or relating to a telephone dialling system in which each of the buttons pressed generates a tone of a different pitch, which is transmitted to the exchange
| 单词 | touch-tone |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 touch-tone (tuch′tōn′),USA pronunciation adj.
n.
Collins Concise English Dictionary © HarperCollins Publishers:: touch-tone adj
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