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Từ điển Oxford Advanced Learner 8th
Morse code
Morse code [Morse code] BrE [ˌmɔːs ˈkəʊd] NAmE [ˌmɔːrs ˈkoʊd] noun uncountable
a system for sending messages, using combinations of long and short sounds or flashes of light to represent letters of the alphabet and numbers
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