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单词 dah
释义

WordReference Random House Unabridged Dictionary of American English © 2024
dah  (dä),USA pronunciation n. 
  1. Cryptography, Telecommunicationsan echoic word, the referent of which is a tone interval approximately three times the length of the dot, used to designate the dash of Morse code, International Morse code, etc. Cf. dit.
  • 1935–40

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