词汇 | sos |
词源 | SOSalso S.O.S., universal signal of extreme distress, 1910, from International Morse code letters chosen arbitrarily as being easy to transmit and difficult to mistake. Not an initialism (acronym) for " SOS is the telegraphic distress signal only; the oral equivalent is mayday. The figurative sense of " updated on March 22, 2023 |
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